1998

8.5

2003

8.2

2007

6.7

2009

6.4

2020

6.0

2022

5.0

2013

7.3

2009

8.3

2018

7.0

2014

6.9

2019

10.0

1994

7.6

1999

4.8

2002

7.2

2010

8.0

1968

7.3

2024

7.0

1951

7.9

2012

7.0

2022

6.0