Year	% change from 1990
1991	6.45242578927117
1992	18.9717936231726
1993	13.3935169262098
1994	12.2196984917778
1995	14.686862564148
1996	20.6060131377764
1997	32.1368126760132
1998	37.3626373626374
1999	37.3575293624875
2000	54.0266365181147
2001	53.6619253074165
2002	57.0100491389614
2003	58.4624238482311
2004	58.6057883857698
2005	59.8967502903047
2006	61.3841999339365
2007	62.5086410335868
2008	61.5837524731234
2009	62.7136421062668
2010	61.0416233905543
2011	62.6520396244598
2012	64.2624558583654