Year/Approach

MIMIC

1991

44.59%

1992

43.27%

1993

41.97%

1994

41.71%

1995

41.27%

1996

41.10%

1997

40.28%

1998

41.81%

1999

41.95%

2000

40.81%

2001

40.21%

2002

40.62%

2003

40.50%

2004

39.20%

2005

32.05%

2006

31.61%

2007

31.63%

Average

39.68%