1997

6.6

2006

7.1

1989

6.9

1981

4.1

1994

7.8

2007

5.6

1996

4.0

1982

5.2

2024

2.7

1993

7.0

2006

6.7

2009

7.5

1995

0.0

1991

7.2

1985

7.1

1982

6.3

2000

4.8

1987

7.4

2011

6.2

1980

10.0

2002

7.3