Year	Percent change (Units)
1993	-36.734
1994	-13.459
1995	-9.780
1996	14.126
1997	0.461
1998	-13.892
1999	3.407
2000	-2.275
2001	4.854
2002	37.147
2003	14.226
2004	1.524
2005	-12.945
2006	-0.935
2007	2.945
2008	-11.230
2009	17.396
2010	-5.850
2011	22.916
2012	51.655
2013	-12.994
2014	-8.940
2015	24.560
2016	14.577
2017	15.074
2018	3.808
2019	15.053
2020	18.075
2021	21.083
2022	-3.937
2023	8.820
2024	4.579
2025	5.864
2026	9.748
2027	7.710
2028	8.526
2029	0.038