Year	Percent
1993	4.96
1994	1.54
2002	4.4049
2003	4.7549
2004	1.7694
2005	1.5991
2007	1.9843
2011	2.2189
2012	1.5194
2013	1.0132
2014	1.5618
2015	2.0494
2016	2.9454
2017	2.1935