Year	Percent change (Units)
1995	7.118
1996	1.215
1997	14.668
1998	14.334
1999	8.281
2000	-8.556
2001	-9.311
2002	-12.488
2003	14.016
2004	21.924
2005	11.291
2006	-0.997
2007	3.788
2008	7.429
2009	8.593
2010	5.777
2011	9.601
2012	6.096
2013	4.699
2014	-0.158
2015	3.721
2016	8.865
2017	1.419
2018	1.227
2019	1.363
2020	-11.318
2021	7.012
2022	4.083
2023	-6.134