First, I believe the numbers on lawschool.com may be off slightly, but why do you think they are so far off? What purpose does it serve for bunches and bunches of people to be dishonest on there? I don't follow your thinking.
As for your other point, I don't have an exact number but the December 25, 2003, USA today is quoted as saying, "....And the number of people taking the Law School Admission Test (LSAT) in 2003 is near the record 152,242 set during the last recession, in 1991". Not sure if that helps you or not.