Year	% change from 1990
1991	0.667365681556586
1992	2.42560443726454
1993	2.6025212351388
1994	3.78219424644715
1995	5.74842977803431
1996	6.00663267222918
1997	7.21362874112428
1998	8.118021947246
1999	666.200011612299
2000	2199.38215736032
2001	2457.82412830908
2002	2458.15542038232
2003	2458.35692793202
2004	2457.89926671744
2005	2457.81046678029
2006	2457.91634362843
2007	2458.09735888495
2008	2458.23397417288
2009	2458.38766637181
2010	2458.63357389009
2011	2484.21990962899
2012	2509.80624536789