2013

6.1

2011

7.2

2006

7.0

2007

6.7

2003

6.1

2010

9.1

1990

7.0

2013

8.1

2023

6.0

1984

6.6

2011

5.1

2008

7.1

1971

6.5

2011

7.3

2009

7.0

2020

6.9

2002

6.2

1975

7.4

2004

7.6

2019

7.6