1974

7.2

2013

8.7

2010

8.5

2007

8.5

2018

8.1

1989

8.0

2012

6.8

2018

7.9

1972

7.7

2005

8.2

1993

8.0

2023

7.4

2008

8.9

2012

8.6

2000

8.2

1986

8.5

2005

8.3

2016

7.3

1997

7.3