1958

7.6

2001

6.9

1955

7.8

1925

7.1

2002

7.2

1965

6.7

1985

6.2

1987

7.5

2005

7.1

1973

6.1

2014

6.7

2004

6.6

1993

6.2

1981

7.2

1969

6.0

1981

6.2

2002

7.5

2007

7.4

1964

7.5

2002

6.1