2005

5.1

1998

6.0

2002

6.0

1997

0.0

1987

4.5

1993

3.8

2006

6.2

1988

7.4

2017

6.7

1999

7.3

1968

6.1

2000

0.0

2019

6.0

2017

0.0

2002

7.6

1985

4.1

2006

5.3

1985

7.4

1988

6.6

2004

5.5