1933

6.3

1991

6.6

1986

6.7

2021

5.8

1990

6.5

1997

7.1

2004

6.2

2006

6.6

2008

1.0

2003

5.8

1995

7.3

2001

7.1

1998

6.5

1997

6.2

1999

6.9

1992

6.8

1996

6.2

1990

5.8

2001

5.9

2004

6.3