Year	constant 2015 US$
1961	131297158.71462303
1962	163152877.07904306
1963	99871944.30703342
1964	58115137.869052775
1965	56177968.53463135
1966	55527067.71797634
1967	89797143.29013924
1968	126969350.80529565
1969	104908522.48305641
1970	115228691.96306357
1971	121722999.35969757
1972	160780612.51247555
1973	43588208.38210529
1974	91069581.22417605
1975	185173418.78511614
1976	247126284.17280093
1977	223629068.38740218
1978	176347124.53406036
1979	152178219.22300178
1980	223315845.62065578
1981	267136536.62498772
1982	293541982.314839
1983	337426503.84587103
1984	458900066.4729206
1985	544690196.9948269
1986	573910243.2822866
1987	563135313.7446734
1988	545929626.9185399
1989	374203545.55143815
1990	395262671.0310434
1991	384244588.5547083
1992	373533647.8483556
1993	609827719.4277195
1994	144489624.4672125
1995	764431424.9520134
1996	690363016.4773546
1997	764887769.7480268
1998	611220657.7799455
1999	650625766.7590348
2000	585530254.9855511
2001	578897086.7323121
2002	547397867.8608035
2003	1190704056.2279527
2004	1695725955.3951385
2005	2450189457.8377995
2006	1687908167.4222069
2007	1714730896.3861122
2008	1767217542.1976445
2009	1481957824.036022
2010	1849817484.18764
2011	2421912486.0050564
2012	3151460293.4850636
2013	3086041899.4424353
2014	2548804869.4404473
2015	2371866938.683008
2016	2181708669.378623
2017	2699115677.51294
2018	4048231314.8912597
2019	4011907494.094698
2020	4276182559.0024066
2021	4071591586.0821514
2022	3969566836.494338
2023	4064808423.3645053