Year	Percent change (Units)
1994	11.796
1995	7.402
1996	5.462
1997	6.258
1998	5.889
1999	11.999
2000	8.440
2001	6.568
2002	3.096
2003	9.240
2004	5.775
2005	3.656
2006	3.479
2007	2.330
2008	3.467
2009	0.044
2010	1.303
2011	4.581
2012	3.358
2013	0.360
2014	-0.139
2015	-0.449
2016	0.301
2017	2.098
2018	2.025
2019	3.318
2020	1.773
2021	5.162
2022	15.107
2023	6.615
2024	3.442
2025	3.340
2026	2.000
2027	1.956
2028	1.956
2029	1.956