1995

6.2

2002

6.2

1992

5.4

2005

6.2

1997

6.2

1979

6.7

2004

7.1

2008

4.7

1983

6.3

2003

6.9

2008

6.5

2002

5.9

2005

6.2

1995

6.4

1999

6.6

2023

7.4

2006

7.6

1982

5.2

2006

4.3

1985

5.3