2013

6.1

2023

6.3

2022

6.3

2008

5.7

2003

6.2

1968

6.9

2021

6.1

2020

7.0

1996

6.9

1990

7.4

2020

7.4

1972

4.0

1999

6.3

1964

6.6

2009

6.2

6.1

2023

6.7

2020

6.7

2015

5.4

2001

6.9