1928

5.2

1992

6.2

2014

6.8

1972

7.4

1992

6.6

1998

6.0

1990

6.6

1993

6.9

1994

7.1

1938

0.0

1926

4.3

1990

7.0

1980

7.1

2000

6.5

2007

6.1

2013

6.8

1927

5.9

1996

6.1

1931

7.3

1994

0.0