Year	% change from 1990
1991	1.61508583942374
1992	8.56722986613683
1993	0.952851231830931
1994	4.11572387910553
1995	5.73138020659321
1996	6.46670379550363
1997	23.2139739213563
1998	12.7742566175229
1999	7.06074338296376
2000	4.01182586135804
2001	4.16293938854364
2002	7.70262703204758
2003	5.85965924464673
2004	13.0039114293549
2005	17.5772264426297
2006	21.6990191484033
2007	19.4989725552311
2008	17.0972401929036
2009	21.8532348645206
2010	23.9361623428562
2011	25.6838238987156
2012	27.9594498774839