2006

6.3

2019

8.1

1985

8.3

2023

8.0

2005

7.7

1997

7.9

1999

8.0

2015

7.9

2002

7.1

2008

8.1

2010

8.2

2011

7.5

2012

7.4

2009

7.9

2000

8.2

2019

7.5

1985

7.7

1994

8.5

1961

7.2

1996

8.0