Year	current US$
2012	15769.999474286999
2013	1699621.4389801002
2014	1022459.38777924
2015	1991818.0704116798
2016	1682672.97744751
2017	1278751.9693374601
2018	2741481.78100586
2019	1554720.40176392
2020	1912670.01628876
2021	943759.9778175349
2022	386955.291032791