2009

7.4

2019

8.1

2011

8.3

2007

7.3

2012

7.8

2001

8.5

1990

7.5

2013

7.2

2018

6.8

2023

8.1

2007

7.8

2023

7.7

1997

7.9

2009

7.2

1971

8.2

2003

7.8

2000

8.2

2004

8.1

2011

6.9

2001

7.8