Year	Percent
1992	41.72024
1999	54.72745
2000	57.23138
2001	59.37825
2002	63.94172
2003	66.12983
2004	66.50534
2005	71.06646
2006	73.80053
2008	78.55553
2012	106.67495
2013	106.1447
2014	109.01108
2015	110.83805
2016	115.26861
2017	118.1416