Year	Percent change (Units)
1993	25.013
1994	-4.604
1995	16.257
1996	22.008
1997	21.100
1998	0.015
1999	-0.049
2000	12.435
2001	-7.065
2002	-2.535
2003	25.822
2004	18.029
2005	-8.984
2006	17.232
2007	17.205
2008	18.824
2009	-1.383
2010	-5.537
2011	8.668
2012	25.197
2013	14.424
2014	-25.362
2015	-15.247
2016	-3.554
2017	5.948
2018	1.663
2019	7.396
2020	-10.080
2021	15.471
2022	-26.899
2023	148.349
2024	52.750
2025	7.433
2026	5.377
2027	1.315
2028	-0.802
2029	1.535