Year	Percent change (Units)
1993	23.952
1994	-5.867
1995	33.105
1996	35.175
1997	-20.200
1998	0.000
2000	-0.572
2001	-8.071
2002	21.445
2003	15.223
2004	21.344
2005	10.516
2006	44.927
2007	36.873
2008	23.480
2009	-23.971
2010	-12.025
2011	6.541
2012	21.312
2013	22.480
2014	6.473
2015	-17.085
2016	2.298
2017	7.295
2018	11.757
2019	-3.207
2020	-21.603
2021	23.826
2022	49.547
2023	17.722
2024	5.088
2025	4.406
2026	1.491
2027	1.158
2028	0.138
2029	0.629