Year % change from 1990 1991 15.1968325791857 1992 30.4358974358973 1993 45.7182503770741 1994 61.0437405731524 1995 76.4117647058824 1996 91.8220211161388 1997 107.276018099548 1998 4801.56862745098 1999 356.638009049774 2000 1505.67119155354 2001 225.953242835596 2002 1828.37104072398 2003 1845.14328808446 2004 1796.90799396682 2005 1242.75414781297 2006 906.377073906486 2007 554.268476621418 2008 777.44947209653 2009 840.484162895928 2010 636.048265460029 2011 636.04826546003 2012 636.04826546003