Year % change from 1990 1991 82.3788297692264 1992 89.0654597335182 1993 84.6664141027398 1994 89.5478837023722 1995 87.1551091801614 1996 96.1099781559072 1997 106.273123705274 1998 114.357453188351 1999 111.133635872676 2000 119.061993696649 2001 116.161404470382 2002 115.423058011785 2003 117.639709497747 2004 119.853136763366 2005 94.8259324042205 2006 89.0247539516851 2007 78.1607435052111 2008 72.4659643240019 2009 82.1067861777674 2010 86.4437655669389 2011 88.3082032226082 2012 90.1726408782776