1987

8.4

2018

7.4

1963

7.9

1996

7.5

1996

7.3

1988

8.0

2006

7.3

1993

7.9

1999

8.4

2018

7.5

1991

6.8

2007

10.0

2007

7.0

2003

7.4

1966

8.0

1969

7.0

2001

7.6

2005

7.4

1983

5.2

1992

7.3