Year	% change from 1990
1991	10.8730513858819
1992	17.7133852315269
1993	26.4933700567249
1994	49.2783631224518
1995	51.1146253408077
1996	54.9391757247636
1997	56.8949464574063
1998	62.0424283018396
1999	40.6840333845645
2000	47.3453823855567
2001	71.729010274953
2002	75.8392693860875
2003	79.7991701106427
2004	83.9828018910138
2005	86.0942116190068
2006	89.1614115345171
2007	89.3392846720603
2008	92.0977079378667
2009	94.8511285216797
2010	98.2415572793192
2011	100.223972852112
2012	102.206388424906