Year % change from 1990 1991 -2.40356601794663 1992 0.980363593986699 1993 3.69493648758885 1994 -3.5529075865284 1995 -14.5575981820301 1996 -17.390892669852 1997 -12.3769082857476 1998 -2.14135881598883 1999 5.0809928912714 2000 8.14371868080643 2001 10.5596667055122 2002 10.0017480480131 2003 11.3819776249854 2004 13.8183195431768 2005 14.5830905488871 2006 5.08317795128772 2007 30.66294720895 2008 32.4925707959445 2009 44.3596317445519 2010 47.007196130987 2011 48.4772680922969 2012 49.9473400536068