0.0

2016

1.0

1991

7.3

1980

7.1

1981

7.2

1986

7.3

1997

6.8

1995

7.3

1959

7.3

1987

6.5

1997

7.0

2005

7.5

1982

6.7

1954

7.9

1961

7.5

1997

5.8

1989

6.3

1980

7.7

2003

3.5

1955

7.2