1975

5.5

1985

5.8

2022

1.0

1987

6.9

1993

0.0

1999

6.5

2006

6.2

1990

6.5

1996

7.2

1996

4.0

1999

6.4

2005

6.3

2001

5.1

2017

1.0

1991

0.0

2022

0.0

1994

4.1

2009

6.6

1980

6.6

2002

5.5