Year	Percent change (Units)
1993	338.684
1994	126.583
1995	16.374
1996	2.467
1997	1.294
1998	0.544
1999	-1.279
2000	6.608
2001	5.199
2002	1.070
2003	0.856
2004	-0.449
2005	0.524
2006	3.215
2007	2.251
2008	8.332
2009	-0.739
2010	1.508
2011	3.905
2012	3.317
2013	2.785
2014	-0.282
2015	-0.300
2016	-0.239
2017	1.352
2018	1.458
2019	0.766
2020	1.200
2021	3.231
2022	14.205
2023	9.362
2024	4.000
2025	2.500
2026	2.000
2027	2.000
2028	2.000
2029	2.000