Year % change from 1990 1991 3.16836826161504 1992 15.1143922295108 1993 17.7957258631706 1994 27.2615277120175 1995 41.832574089482 1996 36.9608487595442 1997 38.1801591424145 1998 47.1230710532727 1999 47.4441599514574 2000 41.3889795486828 2001 -0.0827430231542525 2002 -3.6675845013124 2003 -4.89999586284886 2004 -6.62472821215312 2005 -6.13263706611628 2006 -5.87797242818596 2007 -4.87011643782093 2008 -0.232369990024872 2009 6.34776892631732 2010 6.53669882918622 2011 7.60206581747809 2012 8.66743280576994