2006

7.2

2003

7.2

2004

7.8

2022

7.0

1987

8.3

1980

6.7

1969

6.7

2019

8.0

2002

6.5

1994

0.0

2005

7.4

2018

0.0

1997

0.0

2017

6.9

2000

5.5

1994

6.4

1991

6.0

1996

6.1

1988

6.2

1982

2.5