1998

5.0

2016

0.0

2017

4.6

2002

0.0

1979

1.0

1957

5.9

2014

6.0

2005

4.3

1987

6.8

2000

4.4

2009

6.5

2018

6.0

1983

6.0

1991

5.6

2007

4.6

1970

7.0

2004

7.3

2001

5.6

1998

6.3

2009

6.7