Year	Percent change (Units)
1980	0.000
1981	0.000
1982	0.000
1983	0.000
1984	0.000
1985	0.000
1986	0.000
1991	0.000
1992	0.000
1993	0.000
1997	-19.051
1998	24.363
1999	88.951
2000	16.254
2001	23.900
2002	3.878
2003	9.510
2004	20.630
2005	6.026
2006	12.578
2007	17.000
2008	-7.623
2009	3.321
2010	10.451
2011	1.013
2012	-0.407
2013	8.288
2014	3.199
2015	5.908
2016	10.388
2017	10.113
2018	3.523
2019	1.651
2020	-27.441
2021	41.449
2022	25.247
2023	7.621
2024	9.339
2025	5.328
2026	5.356
2027	5.331
2028	5.037
2029	5.502