Year	Percent change (Units)
1994	1.194
1995	2.163
1996	2.406
1997	2.914
1998	8.128
1999	0.169
2000	3.000
2001	2.291
2002	1.588
2003	4.190
2004	3.317
2005	2.700
2006	3.137
2007	4.278
2008	6.563
2009	6.843
2010	3.597
2011	6.353
2012	2.548
2013	3.427
2014	0.099
2015	1.589
2016	3.910
2017	2.822
2018	4.849
2019	-0.873
2020	-2.817
2021	2.989
2022	3.078
2023	5.100
2024	3.000
2025	3.100
2026	3.000
2027	2.900
2028	2.800
2029	2.700