Year	current US$
1990	98410896.0209078
1991	91302581.2007095
1992	91949628.0148176
1993	78054535.1421838
1994	75829364.6974999
1995	85393951.2237861
1996	85372597.8094096
1997	79181332.821154
1998	75771191.895227
1999	76047168.6410883
2000	75273609.6929054
2001	69836204.8690533
2002	71911414.0682876
2003	74647514.7271301
2004	74766570.2925494
2005	80274605.9674352
2006	86411737.6574812
2007	96225736.0823044
2008	107805860.118289
2009	91334478.2459004
2010	97787691.4486891
2011	109654107.64355
2012	102698695.0771
2013	97908331.3518792
2014	83129446.3969636
2015	60223261.6054981
2016	52732915.0772551
2017	50753286.9001024
2018	57103728.2020047
2019	53565511.6260169
2020	48831584.3028405
2021	63093309.8733752