Year	Percent change (Units)
1993	4734.881
1994	891.188
1995	376.746
1996	80.230
1997	15.886
1998	10.577
1999	22.684
2000	28.203
2001	11.959
2002	0.757
2003	5.210
2004	9.036
2005	13.520
2006	9.076
2007	12.843
2008	25.201
2009	15.900
2010	9.365
2011	7.958
2012	0.565
2013	-0.261
2014	12.100
2015	48.684
2016	13.913
2017	14.443
2018	10.947
2019	7.886
2020	2.740
2021	9.361
2022	20.183
2023	12.851
2024	6.446
2025	7.578
2026	6.178
2027	5.228
2028	5.000
2029	5.000