Year	%
1984	87.78347
1987	83.82259
1992	74.05215
1995	75.27929
1996	74.72923
1999	92.20547
2000	97.41302
2003	99.13664
2004	95.76923
2007	97.54873
2008	94.33301
2009	94.20178