1968

7.5

1977

10.0

2018

7.3

1996

7.9

1971

8.2

1988

7.4

2023

8.1

2017

6.7

2015

7.0

2016

6.5

1954

6.8

1973

7.7

1970

7.7

1968

7.4

2018

7.6

1999

7.6

2002

6.5

2001

8.5

1982

7.9

2017

7.2