1988

7.9

1980

6.7

1989

6.0

1931

7.5

1994

6.4

1993

6.6

1932

6.0

1940

6.2

2004

5.0

1985

6.6

1990

6.4

1992

6.5

1989

5.7

1986

6.5

2005

6.9

1985

7.0

1957

6.8

1974

6.2

1964

6.1

1973

3.1