Year	current US$
1977	8592592.592592591
1978	11518518.518518519
1979	13555555.555555554
1980	12740740.74074074
1981	13296296.296296295
1982	15851851.85185185
1983	17925925.925925925
1984	19074074.074074075
1985	24074074.07407407
1986	25333333.333333332
1987	31703703.7037037
1988	36481481.48148148
1989	42592592.59259259
1990	44111111.111111104
1991	45703703.7037037
1992	44629629.62962963
1993	41481481.48148148
1994	42762962.96296296
1995	44022222.22222222
1996	52496296.29629629
1997	58911111.111111104
1998	65359259.259259254
1999	69266666.66666666
2000	71403703.7037037
2001	67251851.85185185
2002	70348148.14814815
2003	81229629.62962963
2004	78370592.59259258
2005	95158444.44444443
2006	98062740.74074075
2007	105493592.59259258
2008	109647925.92592593
2009	95371777.77777778
2010	105359259.25925925
2011	110544444.44444443
2012	109540740.74074073
2013	109474074.07407406
2014	124762962.96296296
2015	143248148.14814815
2016	166411111.1111111
2017	180348148.14814815
2018	192922222.2222222
2019	195433333.33333328
2020	167777777.77777776
2021	175877777.77777776
2022	196744444.44444445
2023	241193494.84823182