2009

4.8

2004

4.7

1996

5.8

1966

6.4

2006

5.0

1999

5.3

2020

5.5

2019

7.0

1976

5.2

1999

7.1

2007

7.7

1982

5.8

1977

5.2

1990

5.8

2014

5.8

1950

6.8

1966

6.8

2005

5.1

2012

9.3

2016

6.8