1999

6.4

2006

7.5

1970

4.0

1995

6.6

2006

7.3

2001

6.3

2018

7.1

1993

6.9

2000

6.5

0.0

2014

5.0

2007

6.3

1951

6.7

2017

5.7

2009

7.0

1957

7.1

1988

7.0

1995

6.7

2017

6.3

2005

6.7