1999

6.2

2011

7.3

1996

8.0

2021

9.2

1973

7.2

2007

9.0

2012

9.3

2009

6.7

1964

7.4

1997

4.7

2017

7.2

2003

6.4

2015

6.4

2007

7.3

2020

6.5

1971

6.8

2023

10.0

2015

9.0