Year	Percent change (Units)
1993	3731.800
1994	5273.449
1995	176.743
1996	18.653
1997	14.034
1998	8.687
1999	0.723
2000	-0.774
2001	3.160
2002	1.038
2003	4.682
2004	6.889
2005	0.569
2006	2.899
2007	4.409
2008	9.115
2009	3.516
2010	8.152
2011	7.494
2012	2.492
2013	5.714
2014	3.020
2015	3.696
2016	-1.424
2017	1.189
2018	2.486
2019	1.443
2020	1.226
2021	7.202
2022	8.649
2023	1.965
2024	3.124
2025	3.670
2026	4.000
2027	4.000
2028	4.000
2029	4.000