1998

7.2

2023

7.3

2013

8.6

2001

6.6

1993

8.0

2013

6.9

2014

6.6

1976

7.5

2019

6.6

1990

7.9

2012

7.2

1993

6.6

2005

6.3

1996

5.4

2016

6.8

2004

7.7

2017

6.3

2021

7.4

2003

7.2

2006

7.7