1991

5.4

2016

0.0

1980

7.0

2003

8.0

2005

6.5

2000

8.2

1994

8.3

2000

7.4

1982

6.7

1999

7.3

1973

7.5

1987

7.7

2002

7.5

2007

7.4

1994

5.9

2001

5.9

2007

5.4

2006

6.6

2022

6.0

2006

6.0