2006

5.3

1988

6.4

1996

6.1

2006

6.1

1996

7.5

2021

5.5

2000

6.6

1981

6.7

1993

6.2

1990

6.7

1996

5.5

1991

6.2

1988

6.8

1992

6.3

2003

5.7

1994

5.2

1995

6.5

1992

6.4

1997

6.2

2008

6.2