Year	Percent change (Units)
1990	-1.672
1991	3.500
1992	5.411
1993	-1.008
1994	3.737
1995	9.170
1996	15.700
1997	3.457
1998	7.602
1999	1.398
2000	-5.207
2001	3.958
2002	20.679
2003	5.229
2004	6.632
2005	5.179
2006	5.049
2007	11.875
2008	24.264
2009	25.826
2010	-6.086
2011	-3.224
2012	22.252
2013	2.629
2014	16.775
2015	12.246
2016	-5.146
2017	-2.042
2018	2.907
2019	-8.519
2020	-15.883
2021	32.372
2022	15.200
2023	1.327
2024	3.247
2025	-0.253
2026	2.644
2027	2.552
2028	2.724
2029	4.122