Year	constant 2021 international $
1990	19287.65948891055
1991	17834.00752495112
1992	14317.59901400432
1993	13847.631026263596
1994	13914.611010276323
1995	14806.49026734359
1996	15769.324417170094
1997	18031.782509635126
1998	18995.923911941492
1999	18859.566520606688
2000	20661.865618816548
2001	22042.291790985168
2002	23684.407356150932
2003	25644.934453458085
2004	27554.050153161184
2005	30352.1625113727
2006	33513.259570385235
2007	36218.12324045619
2008	34451.661594893805
2009	29468.46012808261
2010	30257.673830105952
2011	32553.992741862457
2012	33725.40329811376
2013	34339.257629455715
2014	35466.229076795615
2015	36099.75335180332
2016	37228.06497067554
2017	39336.67712022145
2018	40683.415095047196
2019	42167.4906967975
2020	41677.9811972021
2021	44651.99921902658
2022	43856.05882666184
2023	41997.774367680715