1997

5.9

2006

6.7

2023

5.6

1994

4.1

2023

6.5

2009

6.6

1985

5.8

2002

6.8

2005

6.4

1990

6.7

1983

5.2

1987

6.9

2019

6.4

2001

5.1

1989

4.5

2006

6.3

1976

2.0

1999

6.4

1975

5.5

1991

0.0