2003

6.3

2017

7.8

2006

6.7

2013

5.7

2013

6.5

2012

7.0

2020

6.5

2013

5.9

2020

6.5

2013

8.0

1965

6.4

2020

8.4

1989

5.5

2016

6.6

1995

5.6

1996

7.5

1959

6.1

2006

6.4

1998

6.4

1980

5.9