2011

6.2

1978

7.0

2005

4.4

2013

6.6

1989

7.8

2016

7.9

2010

8.4

2010

8.2

2014

7.7

2000

6.8

1994

7.0

2000

7.1

2023

7.6

2021

8.1

2003

6.3

1994

8.7

2015

6.9

2019

8.2

2017

7.6

1985

8.3