Year	Percent change (Units)
1994	24.703
1995	-52.266
1996	7.233
1997	-10.467
1998	5.153
1999	-42.078
2000	20.961
2001	13.521
2002	76.493
2003	9.696
2004	-9.489
2005	-1.263
2006	26.506
2007	-5.541
2008	-15.580
2009	24.945
2010	33.990
2011	-13.976
2012	159.696
2013	55.511
2014	1.974
2015	-33.863
2016	20.237
2017	-9.466
2018	-6.056
2019	-4.013
2020	-8.779
2021	79.307
2022	9.289
2023	24.458
2024	12.274
2025	1.772
2026	4.332
2027	4.882
2028	1.134
2029	6.322