1993

6.1

2024

7.4

2015

5.9

2014

6.1

1982

5.9

2010

5.5

2009

7.3

2015

5.1

1975

7.3

1977

6.7

2016

6.5

2010

5.8

2017

5.8

2004

7.3

2017

6.7

2016

6.2

2001

6.9

2021

6.4

2003

9.0

1969

7.7