1985

7.7

1972

8.7

1974

8.6

1994

7.1

1990

7.4

2008

8.5

1971

8.2

1962

5.1

1992

10.0

1993

7.2

1973

8.0

2002

6.1

2001

6.1

1990

6.9

1985

7.1

1984

5.9

1960

7.2

2005

6.7

1999

6.9

2005

7.0