1998

6.9

2002

7.0

1965

6.1

2000

7.2

1987

6.1

1995

6.5

1994

6.7

1988

6.8

1969

6.8

1970

6.9

1997

5.6

1943

6.0

2016

5.8

1971

6.1

2017

7.2

1979

7.0

1999

6.7

1964

6.6

2004

6.9

1986

3.5