2010

7.3

2018

6.0

2004

6.7

2000

6.3

1998

7.5

1992

6.9

2006

5.5

2011

6.1

2005

5.5

2009

6.3

1967

6.6

2003

7.1

1982

7.6

2001

7.8

1973

7.7

2022

6.0

2012

7.1

1999

7.3

2010

6.0