10.0

2017

7.8

2019

7.3

1976

5.8

1955

0.0

1972

7.0

1988

5.8

2016

6.7

2010

5.5

1964

0.0

1991

8.1

1971

8.2

1983

7.2

1950

8.0

1996

7.6

2015

9.0

1995

6.9

1986

6.0

1982

6.4

2001

7.1