1983

8.0

2012

5.4

2013

6.5

1970

7.4

1996

5.3

1963

6.2

1982

6.1

2021

7.2

1960

6.7

1996

5.8

1982

6.2

2004

4.8

2002

6.3

2009

6.9

2022

7.7

2007

7.1

1973

7.3

1989

5.4

1970

6.4

2006

7.0