1992

6.9

1990

7.0

2009

7.4

2016

7.5

2025

9.9

1990

8.0

2004

5.4

2018

7.7

2005

8.1

1972

6.2

2021

8.0

2009

8.4

2003

7.6

2000

7.3

2019

7.1

1961

7.0

2012

6.6

2020

8.1

2018

8.4