Year	Percent change (Units)
1993	1190.316
1994	2220.897
1995	709.297
1996	52.688
1997	63.820
1998	73.018
1999	293.733
2000	168.601
2001	61.133
2002	42.568
2003	28.398
2004	18.094
2005	10.336
2006	6.992
2007	8.429
2008	14.828
2009	12.950
2010	7.743
2011	53.228
2012	59.218
2013	18.303
2014	18.107
2015	13.523
2016	11.829
2017	6.032
2018	4.867
2019	5.600
2020	5.536
2021	9.453
2022	15.239
2023	5.017
2024	6.307
2025	6.536
2026	5.950
2027	5.546
2028	5.172
2029	5.033