2018

7.8

1984

7.8

2017

5.7

2004

8.0

2016

6.2

1990

6.9

1999

7.0

1998

5.9

1974

6.3

2012

7.4

2003

7.4

2016

7.6

2004

7.2

2016

6.9

2005

8.5

2023

8.6

1978

6.2

1986

7.4

2015

7.7

2019

8.0