1964

7.5

1974

10.0

2006

5.8

2019

6.5

2017

6.1

1985

8.3

2009

7.6

2003

6.3

2015

7.3

2016

7.6

2016

7.6

2015

6.7

2023

7.3

2015

7.9

2013

6.5

2018

7.4

1993

6.6

2010

7.2

1990

7.4

1989

7.9