2001

7.8

1999

7.2

2006

6.1

1999

7.8

2004

7.8

2001

5.4

2018

6.6

1993

7.4

1999

5.6

1981

3.0

2004

4.8

1954

5.9

2008

5.8

2009

7.1

1993

7.1

2008

6.7

2005

6.5

2000

6.9

1995

6.7

1942

6.6