2018

4.8

1985

5.0

1950

6.9

1986

4.9

1958

5.9

1959

5.5

1973

6.5

2013

4.1

1997

6.5

2002

3.7

2016

5.3

1995

0.0

1999

5.7

2008

5.6

1995

6.6

2000

7.1

2001

6.8

1979

6.2

2006

0.0

1994

6.6