1994

5.0

2009

7.6

1980

4.5

2011

6.3

1989

0.0

1978

7.3

2000

6.2

2006

6.2

2006

8.5

2011

7.0

1999

8.3

2007

5.0

1990

5.5

2003

0.0

1981

4.5

2015

5.2

1998

7.2

2007

4.7

1998

6.0

1996

0.0