Year	Percent
1988	100.67873
1999	122.96467
2000	118.96685
2001	119.89645
2002	104.62633
2003	100.27739
2004	102.57278
2005	102.1419
2006	92.38613
2007	93.97163
2008	89.34911
2009	85.25097
2010	82.59109
2011	92.51064
2012	103.9604
2013	102.66413
2014	106.64653
2015	111.11111
2016	117.87649