1953

7.2

2001

9.9

2020

6.5

2013

5.9

2006

7.8

2016

7.7

2008

5.8

1999

6.6

2013

6.5

1986

6.2

2013

6.7

2019

6.4

2010

5.5

2006

6.8

2017

6.9

2016

6.9

2012

7.7

2016

6.7

1994

6.6

2012

6.6