Yes it is for cases decided in 2009 only.
I too think that this statisctics is best case and does not represent true picture. To get a true picture one will have to
1. also include in the base those cases that are compounded or withdrawn.
2. also take out those cases that resulted in conviction by lower court but latter are set aside by higher courts.
When feminist were confroted with low conviction rate previously - they use to put defence -- "so what conviction rates in other IPC is also very less."
This statistics takes air out of their defence -- the conviction rate in the 498A is not just low, it is LOWEST.