Year	constant 2021 international $
1990	1143.8607522539794
1991	1090.9413171925794
1992	1416.6504829725823
1993	1515.8016613192794
1994	1703.7674541901204
1995	1927.6278805705167
1996	3090.7027180628315
1997	7432.523205931986
1998	8846.563568409108
1999	10687.648191939972
2000	12081.887645894849
2001	18798.248903818574
2002	21419.265613710606
2003	23309.06249985881
2004	30738.658902877203
2005	34294.55037536484
2006	35276.869561458065
2007	38807.888221818175
2008	43594.598101628086
2009	42118.07622739156
2010	36577.68410574592
2011	37259.709111662065
2012	38698.73873833333
2013	35598.94888565013
2014	34332.4424835794
2015	30004.94624125552
2016	26343.492028661658
2017	23963.70066435834
2018	21700.366218391813
2019	19838.028420250535
2020	18378.499355853342
2021	18100.913925487075
2022	18320.243450312973
2023	16876.867769630382