Year U.S. Dollars 2010-01-01 218310600000 2011-01-01 252114500000 2012-01-01 267082700000 2013-01-01 278388100000 2014-01-01 260574000000 2015-01-01 244021000000 2016-01-01 250007800000 2017-01-01 277041800000 2018-01-01 280268600000 2019-01-01 295843700000 2020-01-01 311421700000 2021-01-01 326887800000 2022-01-01 343009400000 2023-01-01 359836400000