2009

7.3

1990

5.1

2003

6.2

2010

6.8

2018

6.0

1996

5.9

2015

6.3

1976

7.9

2003

7.0

2015

5.5

1991

6.7

1980

6.3

1960

7.7

2018

8.0

2002

6.2

2008

6.1

1961

0.0

1998

6.0

2015

7.9

2014

6.2