1967

6.7

2007

5.5

2007

6.7

2013

7.9

2001

5.8

1963

6.9

2017

5.6

2010

5.7

2009

5.5

1984

7.0

2011

6.0

1947

7.5

2011

6.3

2014

7.2

1986

5.6

1994

6.2

2018

5.4

1996

5.3

2004

7.7

1993

7.3