And I didn't publish the Corruption (Perception) Index [CPI].
I am sure you didn't publish the Index, and at least I will not dispute the index. In recent few years we have seen an improvement in the CPI. Partially owing to factors like introduction of Right to Information Act and an overall economic growth.
Since the index is related to perception of corruption rather than the corruption itself. In a growing economy people ignore corruption, only when it is stagnant than corruption matters more and is perceived more.
But the already introduced Right to Free and Compulsory Education Act is liable to better Indians ranking regarding corruption in long term.