Year	Percent change (Units)
1993	34.755
1994	26.362
1995	23.140
1996	13.118
1997	6.401
1998	2.697
1999	3.005
2000	1.743
2001	3.173
2002	1.451
2003	3.583
2004	7.334
2005	7.127
2006	6.740
2007	14.024
2008	10.398
2009	-1.367
2010	2.401
2011	3.879
2012	1.590
2013	-0.404
2014	0.274
2015	0.404
2016	2.105
2017	2.160
2018	2.549
2019	2.137
2020	-0.489
2021	7.883
2022	20.702
2023	0.854
2024	5.684
2025	2.013
2026	2.354
2027	2.165
2028	2.340
2029	2.300