2004

5.4

2014

5.8

2019

5.7

2020

6.4

2015

6.6

1975

7.0

2015

6.6

2024

6.0

2024

7.2

1953

4.8

2023

6.8

1985

6.8

2020

6.4

2018

6.5

2018

6.3

6.6

1989

9.2

2012

9.3

1999

9.1

7.0