0.0

2016

5.5

2018

6.9

1979

4.0

2005

7.3

2008

6.1

1981

0.0

1981

7.0

2002

6.4

1995

6.0

2019

6.4

2002

7.2

1998

5.1

1977

5.8

0.0

1972

6.4

1947

7.0

2005

4.9

1963

5.9

2003

4.1