Year Percent 1993 -1.38317 1994 10.43215 1995 9.81004 1996 9.07484 1997 3.89715 1998 9.10917 1999 2.31856 2000 24.97759 2001 15.07727 2002 16.14867 2003 21.87284 2004 24.79929 2005 7.62369 2006 11.394 2007 7.28821 2008 16.07622 2009 29.50451 2010 11.57376 2011 13.34085