Year	constant 2015 US$
1991	944.0484944019122
1992	774.5207190667323
1993	888.282061463098
1994	924.5056982454824
1995	972.356909913567
1996	976.3861676222494
1997	983.5932898036682
1998	1019.1268076300662
1999	1047.9636572115028
2000	1148.1984068765726
2001	1175.2033448479879
2002	1236.837319085366
2003	1366.384877431389
2004	1393.0938718664902
2005	1542.725309651815
2006	1613.8279067709577
2007	1726.1933097794674
2008	1870.5959803861863
2009	1996.4250328496043
2010	2114.169791730018
2011	2191.1060557029095
2012	2262.4684201575433
2013	2277.249409775127
2014	2340.8195483487375
2015	2373.3429471150703
2016	2436.279322936847
2017	2400.7735249368147
2018	2414.3021890904706
2019	2482.4913089892075
2020	2506.040448245575
2021	2449.646600380673
2022	2506.470968520965