Year Percent 1996-01-01 1.6872300000000000 1997-01-01 5.2178200000000000 1998-01-01 3.8558000000000000 1999-01-01 5.4131000000000000 2000-01-01 5.3445599999999995 2001-01-01 4.8930200000000000