2017

4.9

2005

5.2

1995

0.0

1965

8.3

1999

6.0

2000

6.5

2006

6.8

1981

10.0

2002

6.6

1990

6.5

1985

8.1

2008

5.9

2013

7.0

1965

7.0

1986

7.0

1989

8.0

1999

0.0

1957

0.0

2018

6.9

2006

7.0