Year	Percent
1997	95.37703
1998	99.8873
1999	99.51823
2000	94.82669
2001	97.28927
2002	95.91414
2003	101.12293
2004	113.54991
2008	95.76696
2009	95.39495
2010	95.81483
2011	95.48264
2012	101.26727
2013	98.815
2014	99.47995
2015	97.51724