1998

8.6

2004

9.5

2007

8.2

2010

8.9

2006

8.3

2015

8.7

1989

5.8

2022

8.4

1997

7.3

1999

7.5

1972

7.7

2021

7.3

2022

7.4

1995

7.6

2022

7.3

2015

7.9

1995

7.9

2023

8.2

2018

7.0

2019

8.3