Year % change from 1990 1991 5.73708293063766 1992 23.1289975378766 1993 -0.179246303523539 1994 5.70428424875988 1995 -0.971061628486736 1996 -7.87148703146172 1997 43.6361465313469 1998 62.401959670638 1999 11.6470229529973 2000 -2.40657954723871 2001 -6.80507182570478 2002 23.9052858659057 2003 27.2990040833394 2004 19.6374438044181 2005 28.37381833223 2006 27.5025486847086 2007 28.0702118205124 2008 6.18447491026328 2009 -2.77259328954975 2010 18.900402284643 2011 30.1863399056538 2012 30.3744373515931