7.8

2011

7.1

2010

6.6

2012

6.3

2020

7.4

1952

7.9

2015

7.4

1974

7.3

1969

7.0

2014

5.6

2009

5.0

2008

6.1

1967

7.7

2019

7.6

2010

7.0

1968

6.5

1962

7.9

2023

6.5

1984

5.4

2015

6.1