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- 1988 - 54%
- 1989 - 50+%
- 1990 - 52.1%
- 1991 - 55%
- 1992 - 58%
- 1993 - 64%
- 1994 - 72.5%
- 1995 - 79%
- 1996 - 87%
- 1997 - 84.2%
- 1998 - 72.8%
- 1999 - 47.19%
- 2000 - 72.24%
- 2001 - 59.62%
- 2002 - 71.13%
- 2003 - 42.32%
- 2004 - 50%
- 2005 - 72.26%
- 2006 - 74%
- 2007 - 36%
- 2008 - 58.44% - Year to Date How Can I Help?
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