How often does the word imaan (belief) appear in the Qur'an?

The word imaan (belief) appears in 33 verses of the Qur'an:

سورة القلم 68:40
"Or have you any covenant binding on Us till the Day of Resurrection that you shall surely have all that you order?"

سورة الفَتْح 48:5
"He it is Who sent down tranquillity into the hearts of the believers that they might add faith to their faith — and to Allah belong the hosts of the heavens and the earth, and Allah is All-knowing, Wise."

سورة التّوبَة 9:124
"And whenever a Surah is sent down, there are some of them who say: ‘Which of you has this Surah increased in faith?’ But, as to those who believe, it increases their faith and they rejoice."

سورة آل عِمرَان 3:178
"Surely, those who have purchased disbelief at the price of faith cannot harm Allah at all; and they shall have a grievous punishment."

سورة یُونس 10:10
"But as for those who believe, and do good works — their Lord will guide them because of their faith. Rivers shall flow beneath them in the Gardens of Bliss."

سورة السَّجدَة 32:30
"Say, ‘On the day of victory the believing of the disbelievers will not avail them, nor will they be granted respite.’"

سورة الاٴنعام 6:83
"Those who believe and mix not up their belief with injustice — it is they who shall have peace, and who are rightly guided."

سورة التّوبَة 9:12
"And if they break their oaths after their covenant, and attack your deen, then fight these leaders of disbelief — surely, they have no regard for their oaths — that they may desist."

سورة آل عِمرَان 3:91
"Surely, those who disbelieve after they have believed and then increase in disbelief, their repentance shall not be accepted, and these are they who have gone astray."

سورة آل عِمرَان 3:87
"How shall Allah guide a people who have disbelieved after believing and who had borne witness that the Messenger was true and to whom clear proofs had come? And Allah guides not the wrongdoing people."

سورة المائدة 5:109
"Thus it is more likely that they will give evidence according to facts or that they will fear that other oaths will be taken after their oaths. And fear Allah and hearken. And Allah guides not the disobedient people."

سورة الاٴحزَاب 33:23
"And when the believers saw the confederates, they said, ‘This is what Allah and His Messenger promised us; and Allah and His Messenger spoke the truth.’ And it only added to their faith and submission."

سورة الاٴنفَال 8:3
"True believers are only those whose hearts tremble when the name of Allah is mentioned, and when His Signs are recited to them they increase their faith, and who put their trust in their Lord."

سورة الحُجرَات 49:18
"They think they have done you a favour by their embracing Islam. Say, ‘Deem not your embracing Islam a favour unto me. On the contrary, Allah has bestowed a favour upon you in that He has guided you to the true Faith, if you are truthful.’"

سورة المؤمن 40:86
"But their faith could not profit them at the time when they saw Our punishment. This is Allah’s law that has ever been in operation in respect of His servants. And thus have perished those who disbelieved."

سورة التّوبَة 9:66
"‘Offer no excuse. You have certainly disbelieved after your believing. If We forgive a party from among you, a party shall We punish, for they have been guilty.’"

سورة الطُّور 52:22
"And those who believe and whose children follow them in faith — with them shall We join their children. And We will not diminish anything from the reward of their works. Every man stands pledged for what he has earned."

سورة الرُّوم 30:57
"But those who are given knowledge and faith will say, ‘You have indeed tarried according to the Book of Allah, till the Day of Resurrection. And this is the Day of Resurrection, but you did not care to know.’"

سورة آل عِمرَان 3:101
"O ye who believe! if you obey any party of those who have been given the Book, they will turn you again into disbelievers after you have believed."

سورة البَقَرَة 2:109
"Would you then force men to become believers?"

سورة القَصَص 28:56
"Surely thou canst not guide whom thou lovest, but Allah guides whom He pleases, and He knows best those who would follow the guidance."

سورة الزُّمَر 39:38
"And if thou shouldst ask them who created the heavens and the earth, they would say, ‘Allah.’ Say, ‘See ye then that those whom you call upon beside Allah, would they, if Allah desired to afflict me with harm, be the removers of His harm? Or if Allah desired to show me mercy, could they withhold His mercy?’ Say, ‘Allah suffices for me; in Him trust those who put their trust.’"

سورة البَقَرَة 2:99
"And verily, We have revealed to thee clear Signs, and only the disbelievers will reject them."

سورة الحَشر 59:19
"And be ye not like those who forgot Allah, so He caused them to forget their own souls. They are the transgressors."

سورة الزَّلزَلَة 99:1
"When the earth is shaken with her earthquake,"

سورة النَّبَأ 78:38
"On the day when the Spirit and the angels stand arrayed, they speak not, save him whom the Beneficent permits, and who speaks what is right."

سورة الزَّمَر 39:45
"And when Allah alone is mentioned, the hearts of those who believe not in the Hereafter shrink, and when others are mentioned beside Him, lo, they are filled with joy."

سورة الفَتْح 48:4
"He it is Who sent down tranquillity into the hearts of the believers that they might add faith to their faith — and to Allah belong the hosts of the heavens and the earth, and Allah is All-knowing, Wise."

سورة الطُّور 52:23
"Then every soul shall be paid in full according to its work; and He knows best what they do."

سورة الحَشر 59:18
"O ye who believe! Fear Allah; and let every soul look to what it sends forth for the morrow. And fear Allah; surely Allah is aware of what you do."

سورة الحَشر 59:22
"Allah is He beside Whom there is no god, the Knower of the unseen and the seen. He is the Gracious, the Merciful."

سورة القَصَص 28:55
"And when they hear idle talk, they turn away therefrom and say, ‘Unto us our works and unto you your works. Peace be to you! We seek not the ignorant.’"

سورة الفَتْح 48:18
"Surely, Allah was well pleased with the believers when they were swearing allegiance to thee under the tree, and He knew what was in their hearts; so He sent down tranquillity on them and rewarded them with a speedy victory."

سورة الأنفَال 8:27
"O ye who believe! betray not Allah and His Messenger, nor betray knowingly your trusts."

سورة الحَشر59:10

And those who had established their home in this city before them and had accepted faith, love those who came to them for refuge, and find not in their breasts any desire for that which is given them (Refugees), but prefer the Refugees to themselves, even though poverty be their own lot. And whoso is rid of the covetousness of his own soul - it is these who will be successful.

سورة المَائدة 5:6

This day all good things have been made lawful for you. And the food of the People of the Book is lawful for you, and your food is lawful for them. And lawful for you are chaste believing women and chaste women from among those who were given the Book before you, when you give them their dowries, contracting valid marriage and not committing fornication nor taking secret paramours. And whoever rejects the faith, his work has doubtless come to naught, and in the Hereafter he will be among the losers.