Year	Percent
1982	111.69687
1985	97.23537
1988	93.75303
1991	96.72094
1992	97.20867
1993	96.80976
1996	86.24545
1997	87.70519
1999	98.73629
2000	92.17569
2001	85.4398
2003	88.71066
2004	93.9571
2005	90.26472
2007	95.53218
2008	93.61036
2009	95.57611
2010	94.72545