Year	Percent
1995	83.71346
1996	82.56509
1997	85.4445
1998	86.58813
1999	82.24859
2000	92.99368
2001	93.06024
2002	90.43669
2003	89.60436
2004	98.98366
2005	108.90694
2006	119.66026
2007	128.15377
2008	128.01291
2009	104.85515
2010	123.49337
2011	136.89265
2012	138.49722
2013	140.06114
2014	140.09446
2015	143.42555
2016	141.96196
2017	152.47189