Year	Percent change
1990	14.662
1991	40
1992	14.286
1993	31.25
1994	42.857
1995	36.667
1996	17.073
1997	18.75
1998	19.298
1999	19.118
2000	11.111
2001	11.111
2002	18
2003	13.559
2004	15.672
2005	7.742
2006	16.168
2007	22.165
2008	17.722
2009	10.394
2010	19.805
2011	20.596
2012	41.348
2013	19.555
2014	16.223
2015	8.352
2016	11.827
2017	8.31
2018	51.081
2019	31.165
2020	30
2021	28
2022	26
2023	25
2024	25