Year	% change from 1990
1991	-24.1999801491152
1992	41.2078095716296
1993	-38.7676103621619
1994	-20.599379951774
1995	-16.8428919236091
1996	-34.3122544182815
1997	-39.1339759570754
1998	-5.06839797520976
1999	-26.2758572371071
2000	-9.51849927310731
2001	-8.92968699825429
2002	-26.7207505969862
2003	-18.1148081762291
2004	-23.9857073629267
2005	-12.2150084366261
2006	-79.2297272838735
2007	-79.2768731353305
2008	-80.0417452430858
2009	-79.3079631240622
2010	-79.1229995854668
2011	-78.9142295813215
2012	-78.7054595771762