Year	Percent change (Units)
1992	3.371
1993	4.438
1994	6.505
1995	4.886
1996	3.513
1997	2.520
1998	2.205
1999	-0.401
2000	1.184
2001	1.891
2002	1.404
2003	1.590
2004	2.439
2005	3.281
2006	3.514
2007	5.896
2008	8.730
2009	5.551
2010	2.485
2011	5.242
2012	4.221
2013	1.063
2014	1.342
2015	-0.522
2016	2.403
2017	0.577
2018	0.139
2019	3.318
2020	1.779
2021	1.181
2022	5.172
2023	1.800
2024	1.811
2025	1.903
2026	1.951
2027	2.000
2028	2.009
2029	1.995