1980

8.2

2004

7.5

1992

7.3

1975

7.7

2006

6.6

1987

7.1

1954

7.6

1987

7.1

2023

5.6

1976

7.4

2006

5.6

1984

7.1

2005

4.5

2018

6.1

2002

6.2

1995

7.2

1999

7.2

1986

6.5

1932

5.5

2013

4.2