2015

6.8

2019

7.6

2011

0.0

1979

7.0

1983

6.7

1964

6.2

2019

6.1

2013

9.4

0.0

2006

6.5

1997

6.0

1998

5.3

1993

10.0

2008

6.8

2008

6.5

1968

7.1

1982

8.0

2019

6.4

1996

6.9

2007

4.0