1991

6.5

2016

6.3

1962

7.3

1964

7.3

1998

4.8

1970

7.1

2005

6.8

1945

6.0

2003

6.6

2007

7.3

1999

6.2

1969

6.9

1942

5.4

2014

6.0

2003

7.4

1988

5.0

1980

6.8

1993

5.1

1987

6.2

2009

7.1