2020

9.7

2021

7.9

2007

7.9

2005

7.5

2005

8.7

1962

7.2

2012

8.3

1990

7.8

2003

7.1

1988

7.6

2013

6.6

1999

8.4

2019

8.2

2019

8.5

2009

6.9

2000

8.6

2022

8.6

1997

8.0

1992

8.2

2023

8.5