Yes, could be due to massive corruption and corrupt ppl putting money back into land.Ya'll Nibbiars observations.
During the NDA property prices are always stable. Eg. NDA 1, and currents.
And during the UPA the Property Prices always skyrockets. Eg. 1991 to 1998, 2004 to 2008 And 2009 to 2013.
What do you think?