2007

7.3

2020

7.7

2018

7.1

2016

4.7

1986

6.4

2015

6.8

1975

7.3

2004

6.0

2005

6.4

2006

6.3

2017

7.5

2015

5.7

1987

4.1

2011

6.8

2003

6.9

2019

6.2

1977

6.8

2015

7.2

1989

6.1

1896

7.1