2015

6.6

1968

8.1

1989

8.3

1994

8.5

2010

8.2

2017

7.3

1990

8.5

2001

8.4

2016

7.9

2016

8.2

1976

8.1

2024

7.1

2014

8.5

2016

7.0

2017

7.6

1995

7.2

2021

7.8

2018

8.0

2015

7.6

2019

8.5