1996

6.3

1995

8.1

2001

6.6

2013

7.4

1999

7.9

1984

0.0

1993

0.0

1969

8.2

1976

7.4

1997

7.3

1999

7.3

2005

7.2

1977

6.5

2017

10.0

2007

0.0

1991

6.9

2016

8.0

2018

7.4

1981

8.1

2003

8.1