Year Percent 1993-01-01 78.0886 1994-01-01 90.8957 1995-01-01 79.2979 1996-01-01 80.8715 1997-01-01 63.1904 1998-01-01 68.2605 1999-01-01 74.5504 2000-01-01 80.7479 2001-01-01 78.1335