The zakah on land held for trade that has not been subject to zakah for several years

Question:
Honorable Shaykh. This questioner says: I bought a piece of land five years ago for twenty-five thousand for the purpose of trade. Then the value of the land increased to varying degrees, and now it is worth approximately one hundred thousand. How do I pay its zakah, since I have not paid it since I bought it?

Answer:
If you intend to sell it, you must pay its zakah every year. Whenever a year passes over it, you pay its zakah. The method of zakah is that you appraise it at the price it is worth at the beginning of the year and you give one-quarter of one-tenth. If years have passed and you have not paid its zakah, you estimate its value for each year and calculate the zakah from that. The zakah for the past years is not dropped from you. You do your best to estimate its price for each year, you total the zakah for all the years, and you give it.

The presenter:
May Allah reward you