Year	Percent
1988	89.29766
1999	109.2511
2000	113.71681
2001	119.51567
2002	102.73973
2003	101.73333
2004	101.29702
2005	98.33119
2006	90.3268
2007	91.4718
2008	86.7052
2009	85.99696
2010	83.92283
2011	85.6176
2012	104.99109
2013	102.81955
2014	103.57853
2015	105.83333
2016	116.38298