Year	Percent change (Units)
1992	-82.872
1993	115.046
1994	-17.381
1995	24.539
1996	32.435
1997	-20.473
1998	-20.295
1999	-4.712
2000	-23.059
2001	32.500
2002	-16.993
2003	0.431
2004	13.292
2005	-0.781
2006	9.462
2007	38.382
2008	24.588
2009	15.812
2010	-5.662
2011	12.614
2012	10.581
2013	3.495
2014	-0.820
2015	11.864
2016	-1.396
2017	3.488
2018	39.373
2019	15.133
2020	-13.130
2021	0.399
2022	13.265
2023	26.473
2024	10.350
2025	9.824
2026	9.438
2027	8.445
2028	7.959
2029	7.383