1964

7.1

1962

6.9

2016

6.5

1971

6.8

2015

5.7

2017

6.7

2021

6.6

2019

6.1

2014

5.9

2012

6.2

1966

6.5

2007

5.4

2016

6.6

2016

6.3

2015

7.0

1999

5.6

2014

6.8

2001

6.8

2019

5.9

1975

4.5