Year	constant 2015 US$
1999	1334917362802.7324
2000	1508169868117.7979
2001	1567422041302.0496
2002	1625896434021.4744
2003	1724077868834.4692
2004	1923668829763.1875
2005	2102806351130.3103
2006	2331464838701.879
2007	2625702865960.9062
2008	2776616622251.514
2009	2470583012561.73
2010	2669834506498.3877
2011	2867520773005.453
2012	2970961721064.6865
2013	2993233204152.115
2014	3022937226905.4707
2015	2971398477230.648
2016	2938041531293.7485
2017	3070472513437.0557
2018	3223231868521.6885
2019	3309372325951.161
2020	3241081633163.5986
2021	3267842251610.9243