Year	%
1983	55.0228
1984	56.42127
1985	65.22933
1986	58.32029
1987	62.87442
1988	63.50637
1998	96.75672
2000	92.52001
2004	100
2005	99.08193
2006	99.59176
2007	100
2008	100
2009	99.21063
2010	100
2011	100
2012	98.45451