1993

6.3

1997

6.9

1947

7.4

1969

7.4

1999

5.8

2007

6.3

1973

7.4

1994

5.7

1964

6.5

1972

7.1

1971

6.7

1954

8.0

1999

7.0

2012

6.0

1948

7.9

1996

7.4

1997

6.6

2014

6.4

2001

6.1

1976

6.9