Year	constant 2015 US$
1991	21017447669.96579
1992	23163347920.62646
1993	25132923129.23797
1994	26694772108.3007
1995	27690351994.66791
1996	27456741604.304142
1997	29122506185.337017
1998	28859793900.01321
1999	29003013522.254875
2000	29497949173.607746
2001	30496882769.123978
2002	31268359292.523445
2003	32535175119.58835
2004	33756553477.100685
2005	34958435644.19542
2006	37495389647.8922
2007	40182444113.91994
2008	41584004235.92646
2009	41907916617.64681
2010	44473464990.76007
2011	46079294977.76097
2012	48648334044.60782
2013	49605505518.254326
2014	51348106364.72593
2015	54062017353.07519
2016	56868787838.439026
2017	58419660787.88924
2018	59545831967.624825
2019	60754108289.24396
2020	58512471806.06274
2021	61581970025.00603
2022	62402136888.963844