Year	constant 2010 US$
1998	720.67657803464
1999	804.296108905637
2000	826.714672122946
2001	970.505886636
2002	1269.85176372587
2003	1484.83983910735
2004	1653.47404528174
2005	2055.48086032754
2006	2852.32422726763
2007	3449.89967497636
2008	4184.61531483505
2009	4115.04639881122
2010	3868.82851990262
2011	4470.49558291454
2012	4479.23057504507