2017

2.2

2009

6.0

1993

7.1

2014

5.7

1971

5.7

2009

5.3

2008

4.9

1977

4.8

1973

4.4

2006

7.4

2017

6.9

1980

4.0

1999

6.3

1998

7.1

2006

7.0

3.5

1981

5.4

1989

6.8

1997

6.5

2006

4.0