Year	Percent
1990	0.00069
1991	0.01808
1992	0.00164
1993	0.00053
1999	1.81224
2000	5.33924
2001	2.96192
2002	1.44587
2003	2.48484
2004	4.71037
2005	1.74709
2006	0.52467
2007	0.48866
2008	-0.13672
2009	1.59121
2010	0.83779
2011	3.69172
2012	0.31898
2013	0.74905
2014	0.18695
2015	0.2482
2016	0.29223
2017	0.34047