Year	% change from 1990
1991	169.686670329224
1992	334.316576494046
1993	506.557428678613
1994	671.650496065522
1995	718.469261779705
1996	782.084002145007
1997	1106.84160522
1998	1348.35155282882
1999	1454.21086347313
2000	1563.37755699423
2001	2068.62370398014
2004	2182.01925690318
2005	2232.10967783238
2006	2239.19826221416
2007	2335.34330897717
2008	2269.2865052327
2009	2299.75391973551
2010	2406.00408006705
2012	2519.01956747104