Year % change from 1990 1991 -6.20348379499461 1992 1.19015328433349 1993 1.346943906005 1994 -10.4116911555535 1995 5.65306270963304 1996 -0.881202987622143 1997 1.67706424446106 1998 35.1469002427939 1999 5.64710863539233 2000 -0.865325456313637 2001 5.72583472813035 2002 17.1325178456836 2003 22.2179588110375 2004 29.1313005682833 2005 35.4651124327686 2006 60.0779322161726 2007 173.653883048751 2008 116.056153535728 2009 92.5077899137982 2010 132.94124651852 2011 135.270658983706 2012 137.600071448891