2009

4.1

2005

7.1

2021

6.2

2004

7.9

2003

6.3

2016

7.7

2011

7.5

2008

6.7

2003

6.2

1962

7.6

1992

7.4

2015

6.5

2002

7.3

1993

7.5

1973

7.9

2012

7.6

2002

7.1

1991

5.7

1960

7.5

2005

7.5