2003

9.0

1998

8.6

1991

7.6

2000

8.0

2012

8.4

2021

7.9

1999

7.5

2017

6.8

2014

8.4

2019

8.4

2014

8.1

1972

7.7

2004

7.2

2019

7.1

2018

8.5

2020

7.7

2019

8.5

2019

8.2

2016

8.4

2016

7.7