1969

6.4

1964

7.4

1997

4.7

2015

5.1

2010

7.0

2020

6.0

2021

7.4

2011

9.7

2023

9.0

2019

7.7

2019

6.2

2007

7.8

1966

5.0

2018

4.1

2022

7.0

2024

6.2

2006

6.5

2012

9.7

1970

5.0