1986

6.3

1992

6.3

1974

6.5

1977

6.6

1959

8.1

2003

5.0

1981

7.1

1965

7.9

1974

7.9

2002

7.5

1995

7.3

1963

7.5

2009

7.0

1964

7.8

2015

7.2

1952

7.9

2013

5.7

2007

6.7

1978

6.4

1999

6.8