1980

6.7

2002

6.3

1982

6.4

1977

4.5

2004

6.0

1956

6.7

1994

6.4

1998

5.5

2003

7.4

1999

5.4

2016

6.8

2014

6.7

1995

5.2

1975

7.2

2002

6.7

2004

5.4

1981

6.5

1986

6.2

1980

6.9

2002

5.6