Year	% change from 1990
1991	1.88996929673799
1992	4.49829005552222
1993	7.43403459506067
1994	8.11335154943691
1995	7.64785048035748
1996	10.5230041423186
1997	11.9550462296744
1998	14.6717314425872
1999	-12.7951620514673
2000	-12.3273305640195
2001	21.754455468618
2002	24.1239083446456
2003	24.3126722324825
2004	30.0047190971959
2005	32.8152036494352
2006	37.0921039599634
2007	40.6180269512884
2008	44.6490681239549
2009	50.7745728051828
2010	55.2961670443886
2011	56.8491287148325
2012	58.4020903852764