1993

6.5

2007

8.0

2023

8.1

2010

6.7

2015

8.7

2009

7.4

2015

8.0

2016

7.8

2006

7.9

2011

6.8

2005

7.5

2015

6.7

1980

8.3

1965

6.0

2010

7.8

2022

6.6

1978

7.8

2007

7.4

2013

7.1