2014

6.4

2003

7.8

1971

6.4

1997

7.6

1997

7.4

1947

7.0

1996

7.9

1995

7.0

2005

7.0

2019

7.6

1983

5.8

2008

6.6

1997

6.8

1981

6.1

1993

6.6

2017

6.8

2008

5.9

2017

6.5

1983

6.2

1994

6.8