Year	Percent
1979	81.45162
1999	99.00255
2000	99.02904
2001	104.43159
2002	101.4566
2003	100.18801
2005	93.10263
2006	96.77852
2011	102.53638
2012	101.85807
2013	99.12854
2014	106.08883
2015	103.99917
2016	104.7572