1986

8.4

2014

7.7

2000

7.4

1995

6.4

2015

7.4

1999

7.0

2022

7.8

1993

7.1

2020

7.8

1994

6.8

1990

7.4

2021

6.6

2013

7.9

2004

7.8

2023

9.4

1984

7.2

1999

7.1

2004

7.9

2002

8.6

2014

7.7