2005

8.7

1998

5.6

1975

7.2

1990

7.4

1963

5.5

1982

6.9

1989

5.3

1985

6.4

1997

6.3

1994

8.1

1964

7.1

1984

7.4

1981

7.6

1984

7.3

2000

8.2

2019

8.3

1969

6.1

2006

7.7

2023

6.7

2013

7.8

1997

6.3

1966

7.6

1984

7.5

1960

6.5

1986

5.2

1980

6.5

1979

5.0

1996

7.0

1996

6.8

1992

6.2

1993

5.7

1981

6.7

1993

5.5

1992

5.4

1966

8.0

2008

8.5

1974

8.0

1996

7.6

1982

6.3

1998

3.0

2004

7.9

1976

5.7

1989

6.3

2003

5.3

2000

6.9

1963

7.2

1968

3.9

1967

6.8

1970

7.8

1997

7.7

1972

6.9

2002

6.0

1968

6.0

1990

0.0

1992

6.2

1982

5.1

2015

7.7

1978

4.5