Year	U.S. dollars (Units)
1992	290.058
1993	373.927
1994	389.592
1995	485.354
1996	572.302
1997	653.525
1998	575.974
1999	398.410
2000	448.062
2001	505.784
2002	569.109
2003	680.272
2004	894.061
2005	1031.422
2006	1179.323
2007	1526.379
2008	2102.942
2009	1890.647
2010	2428.106
2011	2930.062
2012	3031.129
2013	3307.351
2014	3314.553
2015	2715.782
2016	2857.879
2017	3422.643
2018	4121.047
2019	4376.654
2020	4377.542
2021	5293.206
2022	5726.139
2023	6832.465
2024	7488.443
2025	8386.036
2026	9407.804
2027	10555.316
2028	11845.334
2029	13329.665