1995

6.1

1983

6.2

1986

6.0

1963

6.9

1975

5.8

1967

7.5

1947

7.0

1923

6.5

1982

2.5

2002

6.4

2003

6.6

1967

7.7

1994

6.6

1918

0.0

1917

0.0

1999

6.5

2002

7.0

1989

6.6

2010

6.4

1995

6.5