1979

8.1

2008

7.2

2023

8.0

1994

8.5

1957

8.5

2010

8.2

2019

7.4

2010

8.4

2019

8.1

2015

7.6

2000

8.2

2014

8.5

1994

8.7

1998

8.1

2009

7.6

2014

7.9

1985

8.3

2012

8.2

1999

8.0

1994

8.5