1952

6.0

1972

4.0

1988

6.1

1968

6.4

2016

5.8

2013

6.1

2016

7.4

2004

6.7

2001

8.9

2007

6.5

1999

5.1

2018

5.3

2015

7.3

2019

4.4

1990

6.1

2018

6.3

2012

4.7

2019

6.4