2004

7.0

2009

7.8

2019

8.1

2011

6.9

2018

6.8

2015

7.6

2007

7.8

2000

8.2

2021

7.8

2009

8.2

2004

7.4

2024

7.2

2023

7.0

2023

8.1

2019

7.8

1994

8.5

1990

7.7

1981

7.3

2009

7.0

2020

7.7