1998

6.9

2002

6.2

1997

6.8

1997

6.8

1992

6.9

1999

3.7

2016

4.0

2001

7.8

2002

7.4

1997

5.6

1970

5.5

1974

5.5

1976

5.9

2004

6.0

2010

0.0

2025

0.0

1978

6.6

1980

5.4

2014

6.7

2007

5.5