2010

5.8

1984

7.3

1960

7.5

1972

7.9

2012

5.6

1956

7.7

1988

6.2

2001

5.8

1952

7.7

1999

7.5

1980

7.7

2008

7.3

2010

6.5

1995

6.8

2013

6.9

1954

8.3

2002

6.3

1972

8.7

1961

7.7

1985

6.3