Year	current US$
1991	0.04342521421937778
1992	4.175643866106433
1993	21.335342139092464
1994	36.66609195641653
1995	44.884601863012435
1996	68.87594095623683
1997	55.6401929830084
1998	49.17279054562428
1999	59.37661679756215
2000	42.17426345835882
2001	73.26922657232227
2002	79.73075166364285
2003	57.86570716488779
2004	80.00580328035718
2005	75.16779667894635
2006	92.05104657944406
2007	80.68322908208188
2008	183.44013964395944
2009	167.27842623587472
2010	155.50763537902128
2011	145.10010873552758
2012	176.77990794041472
2013	173.84822893238288
2014	151.57226642842798
2015	120.50918983607684
2016	124.14201731033896
2017	120.02133110409915
2018	158.08190784179624
2019	132.30341440636735
2020	279.637235224398
2021	207.40385014217753
2022	101.25516529340831