2000

7.4

2017

5.7

1994

7.4

1960

4.5

1988

7.2

2016

9.3

1984

8.0

2001

6.4

1958

6.0

1975

8.0

2006

7.4

1984

6.7

1970

7.1

2000

7.2

1929

0.0

1923

5.0

1974

4.9

1992

7.4

1990

4.0

1999

6.1