Year	constant 2015 US$
1995	18283223252.454494
1996	19558838553.34531
1997	20717801370.676144
1998	21168423633.67865
1999	20999249423.337444
2000	21289629726.60814
2001	22296068931.00797
2002	23717126683.80474
2003	25241329424.935123
2004	26064627257.970924
2005	27228037172.68367
2006	28405217312.19218
2007	30086537550.468376
2008	30630571492.28842
2009	29267208398.470222
2010	29691374969.90482
2011	30070633535.5212
2012	29758746797.706005
2013	29510292719.350903
2014	29446514672.581043
2015	30196452928.913235
2016	31040754925.90205
2017	32105645024.392357
2018	32954969172.546093
2019	34036243477.527634
2020	30947746883.137486
2021	34740998128.27371
2022	38330913218.248604
2023	39615361691.410355