1965

0.0

2014

6.2

1960

6.1

2007

7.4

1959

6.9

2000

6.4

2017

6.8

1999

0.0

1982

5.0

2013

5.5

2001

7.8

2004

7.3

1991

6.8

1992

5.7

1990

7.7

1981

0.0

1984

6.3

2015

6.0

2004

5.6

1991

5.5