2000

6.3

2007

6.5

2005

6.6

2013

5.7

2022

4.5

2012

6.0

2004

6.0

1971

7.8

1994

6.5

1952

8.3

2013

5.8

2009

6.0

1996

6.5

2009

6.1

2011

5.1

2010

6.2

1989

7.1

2003

5.7

1984

6.2

1997

6.0