1968

6.9

1993

6.1

2001

6.9

2024

7.6

2022

5.9

2012

9.7

7.8

2023

8.5

2014

6.8

2015

7.4

2014

5.7

2009

6.5

1967

5.6

1984

9.2

2018

5.8

1999

8.4

2019

6.1

2002

4.6

2009

5.4

2011

7.4