2004

3.7

1989

3.9

1977

4.7

1961

4.0

2005

4.6

2019

0.0

1986

6.9

1988

6.1

1998

6.1

2006

5.1

2016

3.0

2011

0.0

2010

8.0

2008

5.3

2014

0.0

2010

0.0

1979

8.2

1955

6.0

1977

7.4

2007

6.8