1994

6.8

1973

7.4

1990

7.4

1992

6.8

1953

7.7

2001

6.7

2002

7.1

2006

7.1

2000

6.7

1998

6.7

1983

7.2

1997

6.7

1999

5.4

1976

7.1

2003

5.8

2006

6.6

2014

6.4

2018

6.1

1952

5.7

2015

6.5