1998

8.3

2002

7.5

2003

7.8

1999

6.9

2005

7.8

2021

7.5

1990

7.8

1999

7.7

2006

5.7

2002

6.3

1957

8.2

2019

5.9

2007

0.0

2003

6.4

2001

7.1

1983

5.6

2000

6.1

2004

5.8

2000

6.6

1991

7.3