1953

6.9

2002

5.9

2018

6.1

1979

5.7

1980

7.0

2017

1.0

2008

5.8

1989

6.4

1984

7.1

1983

7.0

2013

7.0

1996

4.5

1992

7.8

1999

5.5

1978

4.7

1992

6.5

2005

6.2

1995

1.0

2009

5.5

1966

0.0