1963

2.8

2002

2.3

2005

7.1

1990

7.4

1992

6.8

1995

5.8

2010

0.0

2013

4.3

2013

8.4

2014

5.3

1944

7.0

1999

5.7

1983

7.2

1978

0.0

1969

5.0

2016

5.5

1977

6.3

1997

3.5

2000

6.8

1998

5.6