Year	current US$
2008	16710000.295192001
2009	14350000.05550683
2010	12210000.038146969
2011	10710000.181570645
2012	11030000.120401388
2013	11440000.096336015
2014	11469999.928027397
2015	12070000.16793609
2016	14700000.049546361
2017	18629999.76426363
2018	20609999.882057298
2019	22540000.163018696
2020	21840000.37238002
2021	37590000.04827976
2022	52310000.976547554