Year	Percent change (Units)
1994	47.656
1995	29.003
1996	19.742
1997	9.311
1998	8.782
1999	3.098
2000	3.932
2001	5.626
2002	3.588
2003	1.387
2004	3.038
2005	4.117
2006	4.444
2007	6.745
2008	10.606
2009	0.199
2010	2.741
2011	5.080
2012	4.219
2013	3.247
2014	0.476
2015	0.068
2016	0.800
2017	3.651
2018	3.412
2019	2.268
2020	-0.634
2021	4.487
2022	19.447
2023	9.116
2024	4.159
2025	2.486
2026	2.510
2027	2.510
2028	2.510
2029	2.510