Year	U.S. dollars (Units)
1995	5820.043
1996	6529.042
1997	6030.633
1998	6484.201
1999	6333.862
2000	6015.067
2001	6627.103
2002	8056.318
2003	9823.287
2004	11751.897
2005	13446.938
2006	15284.674
2007	18527.743
2008	22925.748
2009	19908.146
2010	19983.577
2011	21890.781
2012	19880.902
2013	20129.622
2014	19915.381
2015	17842.868
2016	18553.304
2017	20605.825
2018	23380.772
2019	23616.011
2020	22984.459
2021	26794.625
2022	26835.823
2023	30599.595
2024	29800.665
2025	30956.060
2026	32303.459
2027	33741.764
2028	35285.909
2029	36869.617