2007

8.0

1979

6.8

2003

7.6

1975

6.9

2012

7.9

2015

6.9

1998

8.2

2010

8.0

1990

7.6

2012

7.2

1960

7.4

1996

7.8

2006

7.1

1976

8.0

1999

7.7

1996

7.0

1983

7.7

2020

6.5

2012

7.8

2007

7.9