2007

8.6

1999

6.9

2021

7.2

2006

7.8

2008

7.4

2013

7.7

1977

7.3

1965

7.9

2006

7.6

2014

6.7

2004

8.3

2015

8.2

2010

7.7

2015

6.9

1998

7.0

2016

7.7

2010

7.2

2007

7.7

2016

7.1

2023

7.4