2004

7.2

1998

7.3

2006

7.0

1946

7.7

1999

7.4

2003

5.8

2007

4.7

1996

6.6

2002

7.1

2005

6.3

1987

7.3

1998

7.8

2004

5.6

2017

6.0

2001

2.0

1977

5.6

2004

6.6

1960

7.6

2004

5.1

1981

6.4