Year	Percent change (Units)
1995	26.763
1996	-3.955
1997	20.882
1998	17.159
1999	5.698
2000	17.085
2001	-32.934
2002	-18.440
2003	12.418
2004	6.965
2005	19.312
2006	-2.798
2007	21.396
2008	19.926
2009	6.984
2010	0.676
2011	23.039
2012	0.530
2013	4.414
2014	9.555
2015	-3.246
2016	-1.604
2017	13.916
2018	2.508
2019	2.009
2020	-11.199
2021	17.317
2022	5.941
2023	-7.673