2023

7.7

2002

8.5

1997

8.1

2005

7.1

2007

6.7

2000

7.6

2006

8.2

2004

6.0

2001

5.8

2007

8.1

2007

8.7

1968

8.0

1952

5.9

2010

8.2

2021

7.5

2015

0.0

2025

8.7

2019

0.0

2016

4.5

1994

7.6