1929

6.5

1990

7.8

2003

7.6

1994

7.4

1953

7.7

1961

7.2

1998

6.9

2005

6.9

2002

7.1

1948

7.9

1958

5.3

0.0

1993

7.0

1992

7.4

1993

6.9

1994

7.1

1981

7.2

1995

6.5

1961

8.1

2014

6.3