2003

5.6

1987

7.0

1981

6.5

1989

6.0

1994

7.0

1963

7.9

1982

8.1

1983

6.7

1990

6.9

1992

0.0

1992

7.0

1999

5.7

1985

6.3

1978

8.2

2008

6.8

2006

6.6

2015

6.8

1984

7.5

1993

6.1

1987

6.1

2023

4.4

1984

6.7

1998

7.0

1996

7.8

2006

7.3

1987

6.5