1993

6.3

1991

6.7

2002

6.2

1997

6.8

2005

6.7

2007

6.5

1999

6.5

1985

4.5

2000

5.9

2000

5.8

2006

6.5

1987

6.8

1973

0.0

1993

7.2

2007

5.5

2004

3.9

2003

4.4

2017

4.8

2015

4.7

1997

6.2