1997

6.6

2011

4.6

1982

7.6

2004

7.9

1994

3.0

1994

7.8

2002

6.6

2018

7.9

2005

8.2

2020

0.0

1992

7.2

1990

7.4

2000

8.5

1992

7.5

2000

0.0

1994

7.6

2004

5.4

2018

8.4

2001

8.1

1988

5.8

1986

6.6

2000

7.1

1988

5.0

2009

6.2

1995

6.3

1999

8.3