Year	current US$
2000	874.5939011478598
2001	905.8914529445301
2002	982.7817274741159
2003	1103.5443889717856
2004	1191.5324474947163
2005	1256.601877190195
2006	1326.506031603378
2007	1423.7878459133826
2008	1482.7059936545936
2009	1479.4732242130026
2010	1520.5989136664223
2011	1597.7843589280835
2012	1621.5776737644412
2013	1635.2318283664329
2014	1665.354525942261
2015	1632.3444202343635
2016	1680.5646574385169
2017	1739.7263296907702
2018	1811.4703816406804
2019	1845.1468503564815
2020	1814.8073761810792
2021	1960.6325297662504