Year	Percent
1980	124.10845
1981	131.12968
1982	118.98162
1983	96.68185
1984	96.48621
1985	101.76973
1986	98.71046
1987	102.36789
1988	95.33798
1989	98.6439
1990	115.55583
1991	85.00316
1992	84.38199
1993	83.8746
1994	81.19327
1995	81.99055
1996	87.91352
1997	79.07678
1998	64.60367
1999	78.86725
2000	79.1806
2001	73.61067
2002	72.21766
2003	72.06302
2004	78.6051
2005	83.89403
2006	84.63761
2007	79.67953
2008	82.57743
2009	68.46559
2010	69.53732
2011	99.41774
2012	102.14725
2013	104.807
2014	96.05075
2015	82.41678
2016	73.96639