Year	Percent
1986	31.75
1987	15.88
1995	2.56
2008	0.66
2009	1.42
2011	0.85
2012	1.14
2013	0.59
2014	0.74
2015	1.04
2016	1.25
2017	1.66
2018	1.61
2019	0.84
2020	4.07