2013

8.2

2016

6.9

2016

8.4

1989

8.3

1992

8.5

2019

8.7

2015

6.7

2014

8.6

2021

8.2

1996

7.7

2017

7.8

2008

7.7

2022

7.2

1978

6.5

1999

7.4

2019

9.3

1981

6.1

2023

9.0

2005

8.3

2024

8.7