1987

7.5

2016

4.7

1995

5.9

1959

6.2

1987

5.7

2010

2.5

1942

6.3

1962

6.6

1999

7.1

2006

4.8

2008

5.9

1981

6.8

2014

7.9

1982

6.9

1987

6.3

2006

4.6

1996

8.0

1967

5.2

2008

6.9

1989

6.2