Year	Percent
1992	72.77134
1999	74.03187
2000	77.03586
2001	74.45321
2002	80.03878
2003	79.8143
2004	79.87953
2005	82.33842
2006	81.6831
2008	79.99344
2012	97.85012
2013	97.67189
2014	98.83669
2015	100.19398
2016	104.54992
2017	107.61849