Praise be to Allah.
If a person owns the nisaab (minimum threshold) and a year has passed, then he must pay zakaah, even if the wealth is prepared for Hajj, getting married, building a house or anything else.
The nisaab is the equivalent of 85 grams of gold or 595 grams of silver.
Based on this, when one year had passed you should have paid zakaah on the wealth that you had, and you were wrong to follow the opinions of your friends, and they were wrong to issue fatwas without knowledge.
The zakaah that you did not pay is still a debt that you owe, and you have to pay it now, and repent to Allaah for delaying it.
The amount that you have to pay is one quarter of one tenth (2.5%), i.e., 25 in every thousand.
So the zakaah on 9 million is 225,000, two hundred and twenty five thousand dinars.
When the new year ends, look at the money that you have left, and if it reaches the nisaab then you have to pay zakaah on it.
Shaykh Ibn Baaz (may Allaah have mercy on him) was asked about not paying zakaah for five years out of ignorance.
He replied: You have to pay zakaah for all the past years, and it is not waived due to your ignorance, because the obligation of zakaah is something that no Muslim has any excuse for not knowing, and the ruling is well known to all Muslims. Zakaah is the third pillar of Islam. What you must do is hasten to pay zakaah for all the past years, and repent to Allaah, may He be glorified and exalted, for delaying it. May Allaah forgive us and you and all the Muslims. And Allaah is the Source of strength.
End quote from Majmoo’ Fataawa al-Shaykh Ibn Baaz (14/239).
To sum up: You have to pay zakaah on the past years, and you have to pay it because it is something that is still required of you, and the fact that the money has decreased now does not count.
For information on those to whom zakaah may be given, please see the answer to question no. 46209.
And Allaah knows best.