Year	current US$
2000	424.93597412
2001	438.60971069
2002	471.58297729
2003	553.05438232
2004	551.88983154
2005	576.93890381
2006	592.37512207
2007	688.14367676
2008	741.85961914
2009	841.48144531
2010	866.38623047
2011	917.65301514
2012	1030.84655762
2013	1111.21826172
2014	1123.62695313
2015	1134.46166992
2016	1111.42993164
2017	1098.74328613
2018	1049.0612793
2019	1024.39050293
2020	1105.3248291
2021	1146.47277832