1998

6.0

2011

7.1

1964

7.4

1997

6.2

2012

6.5

1994

6.2

1985

6.1

2021

6.8

1973

9.2

2010

7.1

2011

7.3

1988

6.1

2002

6.5

1968

6.9

1996

6.2

1987

6.7

2000

9.4

2016

6.7

1985

6.7

1993

6.5