Year % change from 1990 1991 -3.27934572668068 1992 1.25065144472045 1993 6.78975551320524 1994 13.7883296296856 1995 21.382265249635 1996 34.5268031440806 1997 50.5431591365781 1998 67.4171903058338 1999 77.3991642688013 2000 65.1454879353159 2001 66.0181475054475 2002 66.6612211737938 2003 72.1831300068151 2004 82.4922336863013 2005 85.6272004616385 2006 86.3045750709429 2007 106.699542193072 2008 102.851235340906 2009 101.724781892679 2010 108.814942753301 2011 114.984624705577 2012 120.513944064173