Year	Percent
1990	4.89
1994	7.43
1998	4.77
2003	4.76
2004	3.53
2008	4.25
2012	5.61
2013	5.31
2014	4.85
2015	5.92
2016	4.75
2017	4.5
2018	3.28
2019	2.89