1998

7.3

1978

7.4

2001

6.3

2001

5.1

1976

7.2

2003

5.4

1995

5.9

1981

6.8

1994

6.8

1981

7.0

1960

7.5

1993

7.0

2016

5.4

1987

6.4

2008

5.8

1982

5.9

1997

4.5

1995

4.8

2019

0.0

2014

6.0