2012

6.4

2010

6.6

2007

7.0

1995

6.1

6.3

2015

6.1

1928

7.9

2012

7.2

1987

6.9

2011

6.9

2011

7.1

1986

7.4

1993

5.5

2017

7.7

1990

6.5

2016

7.2

1987

6.2

1959

8.1

1895

6.7

1935

6.5