Year	constant 2021 international $
1990	31598.806347905367
1991	33124.72512909415
1992	34895.77357082885
1993	36428.56451614221
1994	37767.25922145473
1995	37905.69381594752
1996	37804.160164680594
1997	39402.67413889655
1998	36776.43900831179
1999	37339.96356987298
2000	39848.63324654036
2001	39777.87284887713
2002	40258.191379810436
2003	41570.57636896174
2004	44836.204134469706
2005	47938.87065663035
2006	50981.753424463786
2007	53813.04037031796
2008	54630.37247116411
2009	53172.33095742686
2010	56355.43080051503
2011	58672.853254396134
2012	59015.36155152077
2013	60601.649259565005
2014	61839.81989676653
2015	62779.794080864005
2016	63749.4451717062
2017	65662.85969981215
2018	66993.96624158222
2019	65388.344879046315
2020	61328.55606108944
2021	65884.93762606029
2022	64038.66074951481
2023	64431.08908780889