1972

6.5

2015

6.6

6.7

1985

6.1

2006

6.8

2020

6.3

2011

6.4

2015

8.4

2024

7.9

2015

6.4

2018

6.3

2021

6.1

2020

6.5

1985

6.9

2012

9.8

1978

6.7

2018

6.5

2015

6.5

2003

6.8

2010

8.3