2009

7.4

1970

6.8

1985

8.3

2019

7.7

2007

5.1

1961

8.0

1979

7.0

2017

5.2

1984

7.2

2009

7.3

2001

5.2

1972

6.2

1964

7.0

1923

7.5

2019

8.5

1939

7.9

1984

5.6

1937

6.7

1939

7.1

1987

6.5