2013

6.4

2014

8.0

2001

7.2

1981

6.3

2015

5.9

2018

8.0

2003

6.3

2009

7.7

2016

7.3

1989

5.3

1985

6.2

2007

7.4

2020

5.0

2022

6.8

2023

5.6

2020

6.7

1984

7.0

2020

6.4

2014

7.3

2021

6.3