1953

7.2

2003

6.8

1999

6.8

1994

6.2

1993

6.5

2017

6.5

2005

5.2

1983

7.9

1966

6.2

2008

5.8

1961

6.9

2017

6.2

1994

6.8

1979

7.3

2016

6.1

1966

6.2

1995

7.8

1974

6.0

2000

6.4

2014

5.0