2004

6.5

1989

7.3

2015

6.0

2020

7.4

1981

7.1

2019

7.7

1993

6.6

2015

6.4

2007

5.7

2012

6.7

2002

8.4

5.0

2009

6.2

2023

6.5

2009

4.3

1963

7.7

2017

6.8

2000

5.2