1998

8.3

1986

6.1

1983

5.2

2019

4.7

2014

6.7

1992

7.1

1986

1.0

2008

6.1

1991

7.3

2003

5.1

1997

6.5

2004

5.9

1969

6.8

1983

5.9

2006

6.0

2006

6.3

2001

6.1

1982

4.5

1998

6.4

1997

7.5