1972

8.1

2004

8.8

2020

9.7

1966

8.3

1997

8.9

1974

7.8

1971

8.5

1998

8.7

2013

8.4

2014

7.0

2021

7.2

1986

0.0

2014

6.2

2011

7.4

2020

7.5

1996

7.1

1991

8.3

2001

6.8

2017

7.3

2024

7.5