1972

7.9

1994

6.0

1956

7.0

1992

7.4

1991

7.2

2002

6.9

2003

7.6

2006

6.4

1998

6.9

1968

6.7

1994

6.8

2002

7.8

0.0

2016

8.1

1978

6.7

1934

7.0

2000

7.1

1952

6.7

1980

6.8

1970

7.5