Year	US Dollars
2009	444.02018
2010	297.08057
2011	325.61697
2012	313.61746
2013	312.71364
2014	319.61567
2015	244.83334
2016	208.16773
2017	219.07836
2018	192.03877
2019	192.74093
2020	303.88244
2021	253.32608