Year	Percent
1994	141.14926
1995	130.72931
1996	126.50877
1997	91.01725
1998	60.2528
1999	108.74503
2000	147.76243
2001	140.03606
2002	111.38557
2003	102.7844
2004	105.14231
2005	97.36739
2006	94.53571
2007	99.1072
2008	91.03951
2009	58.37427
2010	54.02256
2011	70.4675
2012	75.07633
2013	68.37163
2014	63.18323
2015	53.07318
2016	38.69553
2017	30.69264