1994

8.4

2003

2.0

2006

6.8

1994

6.0

1999

7.5

2004

7.7

1993

6.8

1984

6.1

2002

8.2

1977

5.5

1955

0.0

1979

0.0

2006

0.0

2003

7.6

2002

5.9

1998

6.5

2012

5.6

2019

9.0

1980

0.0

1998

7.2