2004

7.4

1962

7.6

2002

6.0

1976

5.6

1984

5.0

2003

7.0

1965

5.4

2008

6.7

2008

8.0

2008

6.9

1979

7.5

2017

6.0

1965

7.7

2002

6.5

1998

6.0

2006

6.2

1987

6.5

2005

5.9

1977

6.3

1999

7.4