2001

8.0

1988

6.4

1952

6.7

2012

6.2

1995

4.6

1986

6.6

1921

6.8

1972

7.9

1986

6.7

2003

7.2

1937

7.1

2001

4.9

2003

5.9

1993

6.1

2011

7.5

1997

6.0

1953

6.9

1970

6.3

1989

5.5