Year	current US$
2012	3753873.5754787913
2013	3753940.636292101
2014	4409180.007874961
2015	5871419.914066788
2016	6004450.116306553
2017	5156289.96491432
2018	8442956.984043118
2019	12228039.830923075
2020	10214145.377278334
2021	11032799.910753965
2022	9795475.065708159