Year	Percent
1998	104.89418
1999	123.56084
2000	117.22608
2001	115.13164
2002	104.74962
2003	99.29072
2004	90.89237
2005	81.86534
2006	79.56452
2007	81.61392
2008	84.82712
2009	84.317
2010	86.62943
2011	83.44194
2012	79.28728
2013	76.42948
2014	69.5825
2015	70.66117
2016	70.45787