Year	U.S. dollars (Units)
1995	16546.617
1996	16620.854
1997	17751.072
1998	18825.012
1999	19215.013
2000	20681.137
2001	20740.206
2002	21307.261
2003	21949.392
2004	23700.571
2005	24171.995
2006	24845.660
2007	26736.575
2008	28172.075
2009	25134.689
2010	24093.070
2011	25712.438
2012	25119.747
2013	25813.523
2014	26129.732
2015	27458.248
2016	27441.561
2017	28440.093
2018	30082.212
2019	31096.315
2020	23565.550
2021	28813.136
2022	33032.454
2023	36745.657
2024	38018.431
2025	39105.779
2026	40354.646
2027	41689.328
2028	43082.996
2029	44523.254