2003

7.2

2009

5.8

2007

7.0

2016

7.6

2009

7.6

1997

7.9

2010

7.7

1999

8.4

2015

7.3

2017

6.8

2015

8.0

2009

7.3

2014

8.5

2017

7.3

1957

8.5

2024

6.9

2016

6.0

2012

6.1

2000

7.4

1994

8.3