1985

7.2

1983

6.6

1998

6.5

2005

4.2

1967

7.5

1968

7.4

1965

6.2

2012

3.8

2000

2.0

2021

6.0

2003

5.6

1995

6.0

2020

7.3

1984

6.0

1997

6.0

2001

6.7

2006

4.2

2022

4.8

2002

6.4

2018

0.0