1986

7.0

2003

6.1

2007

5.4

2018

5.3

2006

7.1

2009

7.2

2000

5.8

1986

6.0

2002

5.5

1943

8.0

2012

5.9

2011

7.3

1952

6.7

2008

6.8

2004

6.0

1964

7.4

1946

7.8

2012

8.4

1971

6.8

1920

7.9