1975

4.5

5.0

2012

8.2

2014

7.6

2023

6.3

2016

7.4

2000

7.7

2024

5.5

2024

6.9

2024

5.7

1975

6.8

2002

5.4

2016

5.8

2009

7.1

2021

6.2

2007

5.6