For Indian data you can visit the Directorate of Economics and Statistics, Department of Agriculture and Cooperation web-site to download the year-wise data for different crops. http://eands.dacnet.nic.in/
For world data FAOStat at http://faostat.fao.org/site/567/default.aspx can be accessed
For India you also can get the information from the Economic Survey which is released every year when the budget for the next year is announced. It is available online