Year	U.S. dollars (Units)
2004	3066.932
2005	3053.016
2006	3144.743
2007	2509.316
2008	3982.194
2009	4630.943
2010	4813.327
2011	6521.166
2012	10005.183
2013	8975.704
2014	8630.426
2015	7090.709
2016	7825.366
2017	8550.692
2018	10582.207
2019	10567.406
2020	10346.097
2021	14303.427
2022	12268.577
2023	12037.888
2024	12362.250
2025	12314.216
2026	12443.384
2027	12429.281
2028	12458.459
2029	12569.948