Year	Percent change (Units)
1993	-7.645
1994	-5.488
1995	1.792
1996	-2.779
1997	-13.434
1998	-1.025
1999	-10.007
2000	23.200
2001	-19.368
2002	-16.067
2003	0.336
2004	25.990
2005	29.245
2006	20.131
2007	17.335
2008	-5.992
2009	-21.276
2010	43.236
2011	12.707
2012	1.320
2013	5.993
2014	18.098
2015	9.579
2016	14.424
2017	11.279
2018	14.209
2019	13.115
2020	-10.396
2021	12.146
2022	15.839
2023	-2.123
2024	0.882
2025	2.383
2026	4.671
2027	4.654
2028	4.144
2029	4.352