1996

6.4

1962

7.4

1986

6.3

1982

5.4

1978

7.6

1978

6.8

1895

6.7

2006

6.3

2013

6.6

2002

7.5

2005

4.3

2015

7.2

2019

6.4

1981

7.8

2014

6.7

2015

7.3

1983

7.4

2008

8.0

1970

6.9