2008

4.7

1996

6.7

2005

6.0

1999

6.5

2017

5.8

1989

0.0

2005

6.0

1978

7.4

1972

6.2

1990

7.6

1992

7.9

2012

0.0

1988

5.4

2017

5.7

2005

7.4

1987

7.0

2007

6.4

1990

5.0

2014

5.0

1986

7.2