1967

7.4

1991

4.6

1984

6.1

1974

5.5

2017

7.3

1992

7.0

2002

0.0

1974

4.8

2005

7.7

2009

7.3

1987

4.0

1993

7.3

2001

6.5

2017

7.0

2021

4.6

1985

3.0

2022

5.6

2008

6.5

2019

6.3

1974

6.5