1988

7.6

1979

7.1

1986

0.0

1988

6.3

2003

6.0

1979

7.5

1985

8.0

1928

7.0

1967

7.7

2007

7.2

1993

5.7

1990

6.9

1994

7.7

1962

5.5

2004

7.8

2006

6.8

2006

6.7

1991

7.3

1980

7.1

1995

7.3