2007

6.4

2011

5.7

2015

7.4

1989

5.9

1995

6.9

1996

6.6

2006

5.6

2012

5.1

2006

6.4

1975

8.4

1987

5.7

2019

8.3

2023

7.4

2021

7.1

2024

6.8

2010

5.9

1973

7.3

2006

6.3

1941

7.0

2018

6.4