Year	% change from 1990
1991	20.9684897156173
1992	21.9854381848528
1993	21.2234827411045
1994	66.9266990800094
1995	108.433113212872
1996	149.067713246737
1997	169.94287349927
1998	12.6635785297888
1999	12.0568362319892
2000	21.6367125452537
2001	21.0027575530345
2002	0.170936036057823
2003	1.60917733001136
2004	4.74468445369003
2005	2.35702248776437
2006	3.72168871902792
2007	5.04301621473435
2008	6.53971440781147
2009	8.84069890262289
2010	11.2696838489635
2011	12.3823806874531
2012	13.4950775259428