1985

6.8

2019

6.7

2013

6.1

2023

6.4

2024

7.2

1996

6.5

1987

5.2

2016

6.1

2004

6.4

2013

6.7

2024

7.0

1993

7.3

1975

7.0

1980

5.9

2015

6.6

2017

6.2

2008

6.7

2018

6.3

2024

5.9

2012

5.7