1972

6.6

2020

6.4

1980

6.0

1972

6.6

2023

6.8

6.4

2005

6.9

1975

7.0

2011

6.5

2006

6.8

1988

6.5

2008

3.9

2017

6.6

2003

6.9

2015

6.5

1999

6.4

2007

5.5

1985

6.8

2021

5.8

2015

6.5