Year	U.S. dollars (Units)
2000	1596.760
2001	1893.751
2002	2080.950
2003	2745.906
2004	3379.902
2005	3680.063
2006	4429.624
2007	5984.697
2008	7397.037
2009	6746.443
2010	6693.865
2011	7327.501
2012	6594.799
2013	7199.165
2014	7405.960
2015	6534.484
2016	7049.664
2017	7820.079
2018	8872.635
2019	8924.593
2020	7689.836
2021	9438.790
2022	9860.393
2023	11696.262
2024	12645.548
2025	13359.653
2026	14060.294
2027	14764.208
2028	15504.593
2029	16265.698