Year	Percent change (Units)
1995	26.345
1996	-4.637
1997	21.541
1998	14.048
1999	2.733
2000	4.725
2001	-25.931
2002	-18.183
2003	14.686
2004	5.728
2005	6.810
2006	6.147
2007	11.718
2008	19.287
2009	4.081
2010	9.916
2011	25.849
2012	-1.269
2013	7.417
2014	12.239
2015	-4.643
2016	-0.784
2017	13.837
2018	2.604
2019	-0.514
2020	-7.680
2021	16.859
2022	3.856
2023	-7.673