1986

5.9

1985

6.2

2008

0.0

2021

6.4

2005

7.2

1996

6.3

2019

8.3

2001

6.2

1977

6.0

1991

6.5

2006

6.5

1992

6.7

1998

6.3

2002

5.8

2002

5.1

1976

4.8

1998

4.4

1999

6.4

1992

6.0

2002

6.4