Year	current US$
1985	212.15248726745747
1986	218.10786572839973
1987	230.79982607004536
1988	241.83727541712804
1989	246.46903216855875
1990	256.9825180359189
1991	259.2921895730887
1992	227.2659318528755
1993	219.8418172352152
1994	192.55685192355367
1995	215.3696071801748
1996	242.8702078507736
1997	249.8982988631355
1998	251.49185169248352
1999	256.8869247112251
2000	283.05657937139705
2001	265.7143870585712
2002	278.182665021342
2003	298.36481420986945
2004	333.2304741138692
2005	369.24479771060135
2006	407.6088163999006
2007	463.07731356931987
2008	546.0729491787213
2009	592.4998339039512
2010	636.8598927526192
2011	724.8426889454513
2012	764.7508638735391
2013	823.6666890500234
2014	878.9287217679095
2015	856.4327027313903
2016	884.2732916417964
2017	955.7006401237439
2018	923.2729622222132
2019	981.3592452129158
2020	982.6900929852583
2021	1020.6771937898397