1984

7.1

2018

6.7

2017

6.8

1991

6.3

1967

7.1

2013

7.7

2017

7.4

2020

7.3

2016

6.2

1959

7.4

2010

9.2

2016

5.1

2023

5.5

1977

5.7

2010

6.7

2015

6.2

2015

6.1

1973

7.2

1895

5.5

2010

5.3