Year U.S. Dollars 2010-01-01 6620100000 2011-01-01 7515900000 2012-01-01 7889700000 2013-01-01 8450900000 2014-01-01 8773800000 2015-01-01 8672400000 2016-01-01 8178400000 2017-01-01 8608400000 2018-01-01 9417100000 2019-01-01 9751300000 2020-01-01 10240200000 2021-01-01 10753700000 2022-01-01 11293000000 2023-01-01 11744000000