1962

7.9

2014

5.6

1927

8.1

1995

7.6

1984

7.2

1987

6.5

1982

6.6

2005

6.7

1997

6.6

1999

6.3

2002

6.0

1984

6.2

1974

5.9

1993

5.5

2003

7.1

2003

6.7

1989

7.8

1986

7.2

1990

7.5

1996

7.3