Year	Percent change (Units)
1993	22.687
1994	19.288
1995	8.955
1996	9.132
1997	8.787
1998	6.538
1999	7.942
2000	8.930
2001	7.046
2002	7.257
2003	4.613
2004	3.195
2005	2.267
2006	2.786
2007	5.679
2008	2.074
2009	1.770
2010	1.857
2011	2.002
2012	2.676
2013	0.674
2014	0.140
2015	-0.449
2016	0.511
2017	1.745
2018	1.421
2019	1.827
2020	-1.082
2021	4.884
2022	10.256
2023	4.166
2024	2.208
2025	1.976
2026	1.996
2027	2.021
2028	1.996
2029	2.012