1932

6.8

2013

6.1

2010

4.6

1990

6.4

1986

7.3

2013

6.3

1974

6.9

1996

6.0

2002

5.5

1984

6.5

1983

7.9

2011

5.8

1959

7.5

1961

8.0

1955

7.2

1999

7.2

2021

7.0

2002

7.1

1988

6.1

1965

7.1