1968

4.8

2006

6.4

2018

8.2

2004

7.9

2007

3.3

2018

6.4

2009

8.5

2020

6.1

2024

10.0

2020

2.8

2021

5.7

1982

6.4

2019

5.4

2016

6.0

6.8

1993

7.0

2002

5.1

2015

6.4

1999

7.1