Year	Percent
1989	1.74925
1990	1.21397
1991	0.99997
1992	1.17522
1993	1.3393
1994	1.6555
1995	1.20581
1996	1.60737
1997	2.14468
1998	2.18256
1999	4.14051
2000	4.82575
2001	3.87127
2002	1.78986
2003	1.93246
2004	1.89681
2005	1.47404
2006	1.85399
2007	1.89332
2008	1.61662
2009	1.7385
2010	1.9344
2011	1.83943
2012	1.82974
2013	1.87808
2014	1.93515
2015	2.1597
2016	2.02951