Year	constant 2015 US$
1991	2667.723932124436
1992	2558.7073891465325
1993	2497.682392753232
1994	2347.1115774208833
1995	2554.4112481817097
1996	2399.3844818276843
1997	2474.0064559000934
1998	2420.3849122906804
1999	2299.5659473566775
2000	2227.0366114378608
2001	2150.0208198397336
2002	2112.6894083004595
2003	2129.3122971398834
2004	2153.338908768504
2005	2294.3449665181834
2006	2412.975924974798
2007	2453.245724886427
2008	2569.4251110177092
2009	2633.5662736308027
2010	2701.0336051005465
2011	2766.9106293190566
2012	2806.5754605932098
2013	2856.7474644768254
2014	2911.2410445079295
2015	2944.035848703796
2016	2979.855865031624
2017	2988.1831465814707
2018	2938.0947903722526
2019	2925.678026931599
2020	2862.4173110591178
2021	2803.4774885965603
2022	2673.477075613863