1994

5.3

1931

8.3

1995

7.2

1930

6.1

2006

7.0

1968

5.8

2005

6.9

1925

8.0

1960

7.5

1959

7.9

2001

7.9

2004

8.0

2001

6.9

1979

7.7

1977

7.7

1993

7.4

2006

7.7

1998

6.7

1962

7.6

1999

5.4