2007

6.6

2018

5.5

2020

5.3

1993

7.8

1981

0.0

1980

7.0

1967

8.4

2006

7.2

2013

5.9

1994

7.4

2008

6.5

2009

5.6

1963

0.0

2015

4.0

1960

6.7

1952

4.0

2000

7.4

1996

6.1

2011

6.4

2016

6.4