1995

8.1

2006

8.2

1994

8.7

1972

8.7

2013

8.0

2017

7.6

1983

8.2

1994

8.5

1993

8.6

1995

8.4

2004

7.2

2011

7.3

1994

8.5

1979

8.2

1989

7.8

2010

8.4

2014

8.5

2019

7.7

1957

8.5

1976

8.1