1976

5.5

1972

7.1

2013

6.1

2003

6.1

1990

6.1

1999

6.6

2017

5.7

1998

5.1

1989

5.9

2000

4.9

2020

6.4

2008

5.7

2012

6.3

2022

7.4

1977

6.0

2021

5.2

2009

5.4

2017

6.9

2023

6.9

2005

6.3