Year % change from 1990 1991 -20.7883116498237 1992 -8.22540971460748 1993 -14.4278813383517 1994 -14.4975254126782 1995 -5.53714844560353 1996 -7.42435468097086 1997 -5.29265329105296 1998 -20.4341641229292 1999 -16.7794801884835 2000 2.72915864031058 2001 11.966926473639 2002 -15.0650505289986 2003 -15.8216518981715 2004 -11.7982989064399 2005 -13.7006193877249 2006 6.2021752659811 2007 92.4396171057701 2008 49.5812464807516 2009 48.6844678896364 2010 30.2800580861216 2011 31.5828586669828 2012 32.885659247844