1991

0.0

2018

0.0

2011

10.0

2016

7.0

2008

7.0

2001

5.6

1985

6.7

2002

7.6

1975

7.3

1987

8.2

1960

7.4

2003

6.2

1988

7.7

1999

7.7

1993

6.8

1989

6.8

1979

6.1

2004

7.4

2006

8.3

2021

0.0