Year	% change from 1990
1991	3.6115058914326
1992	10.4289343984877
1993	8.772134057877
1994	10.7490137895913
1995	18.8524116890499
1996	16.1538373686281
1997	21.5099768099705
1998	42.7627620427911
1999	45.5038273449586
2000	52.1526416383662
2001	46.6651355374782
2002	51.680458364641
2003	54.3955924775267
2004	45.8606830325749
2005	74.4790967805602
2006	39.6889672432869
2007	36.3612411997497
2008	27.8333697052368
2009	29.6516587713073
2010	23.1065452098179
2011	23.615617732507
2012	24.553893483787