Year	U.S. dollars (Units)
1992	1263.863
1993	1383.543
1994	1824.418
1995	2387.158
1996	2348.109
1997	1980.429
1998	1888.755
1999	1931.989
2000	1878.237
2001	1839.616
2002	1974.061
2003	2444.352
2004	2812.36
2005	3112.307
2006	3431.004
2007	4192.864
2008	5014.067
2009	4782.411
2010	4824.744
2011	5410.652
2012	5043.281
2013	5621.982
2014	5927.734
2015	5257.378
2016	5597.092
2017	5957.992
2018	6702.781
2019	6694.489
2020	6629.372
2021	7600.042
2022	7498.577
2023	8147.93
2024	8847.378
2025	9522.223
2026	10229.125
2027	11044.67
2028	11874.168
2029	12681.037