2001

7.8

2008

7.6

1999

7.9

1988

8.0

2003

5.5

1977

7.3

2001

7.7

2024

7.4

1960

7.6

1998

7.1

2018

6.2

2008

7.6

1980

8.3

1982

7.6

2008

8.9

2001

7.8

1993

5.6

2012

7.7

2004

7.5

2004

5.9