Year	U.S. dollars (Units)
1992	395.233
1993	2207.350
1994	1822.091
1995	2304.517
1996	916.043
1997	1016.002
1998	1069.860
1999	1424.366
2000	1833.159
2001	2502.842
2002	3107.479
2003	4038.502
2004	4966.204
2005	5943.360
2006	7320.700
2007	8780.474
2008	7189.293
2009	6670.904
2010	6675.041
2011	8284.783
2012	9205.830
2013	9147.926
2014	9924.593
2015	7794.133
2016	7306.006
2017	7690.915
2018	8128.406
2019	8611.769
2020	8381.012
2021	9608.222
2022	12123.362
2023	11833.107
2024	12412.043
2025	13329.488
2026	14365.972
2027	15517.968
2028	16793.897
2029	18202.607