1988

6.0

1987

7.5

2006

6.2

2007

5.7

2014

6.2

1971

7.1

1993

7.5

2006

6.6

2017

6.7

1996

7.8

1941

7.3

1979

5.8

1952

7.7

2011

7.2

1973

7.3

1984

9.2

2004

6.0

1998

7.0

1985

6.2

1964

7.0