1966

6.2

1970

6.8

1999

6.0

1943

5.4

1989

5.0

1943

8.2

2016

6.5

2017

5.9

1992

0.0

2008

6.7

1997

0.0

2017

4.2

1987

3.7

2005

6.2

2003

6.0

2020

4.0

2016

7.7

2017

4.7

1989

6.0

2017

4.9