2002

6.4

1983

5.5

1999

6.1

2000

7.4

1967

6.5

1973

7.4

2008

7.1

1992

6.2

2015

5.1

2014

7.1

1987

7.5

2018

6.1

1965

7.9

2009

7.1

1995

6.8

2013

6.7

1938

7.0

1990

6.1

1968

6.6

2017

6.9