1993

6.1

1968

6.9

2012

7.1

2011

6.4

2015

6.4

2020

6.4

2019

8.7

2023

6.8

2018

6.5

2017

5.9

2023

6.5

2020

6.4

2011

7.5

1989

5.5

1987

6.0

2024

7.0

2015

6.6

2017

6.1

2011

6.6

1972

6.6