1 st January 1986-31 st December 2004,97.4%,
1 st January 1987-31 st December 2004,91.5%,
1 st January 1988-31 st December 2004,83.8%,
1 st January 1989-31 st December 2004,73.9%,
1 st January 1990-31 st December 2004,61.6%,
1 st January 1991-31 st December 2004,45.7%,
1 st January 1992-31 st December 2004,40.0%,
1 st January 1993-31 st December 2004,35.1%,
1 st January 1994-31 st December 2004,32.7%,
1 st January 1995-31 st December 2004,29.8%,
1 st January 1996-31 st December 2004,25.0%,
1 st January 1997-31 st December 2004,22.4%,
1 st January 1998-31 st December 2004,18.1%,
1 st January 1999-31 st December 2004,14.5%,
1 st January 2000-31 st December 2004,13.2%,
1 st January 2001-31 st December 2004,9.6%,
1 st January 2002-31 st December 2004,7.8%,
1 st January 2003-31 st December 2004,6.0%,
1 st January 2004-31 st December 2004,3.1%,