2008

5.8

2005

5.6

1984

5.9

2007

7.2

2001

6.2

2005

6.3

2016

7.0

2023

6.0

2003

6.7

1998

6.2

1999

6.0

1978

6.3

1993

6.5

1991

6.1

1984

6.1

1994

5.1

2023

0.0

1972

7.4

1973

7.3

2003

6.3