1990

6.9

2018

8.2

1981

6.9

2015

8.4

2002

7.9

1992

6.8

2017

8.1

1961

7.0

2019

8.5

2016

8.0

2023

8.5

2018

7.8

2001

7.6

2000

6.2

2013

8.4

2015

8.5

2013

7.5

1989

8.3

2020

7.7

1991

7.6