1985

7.9

2015

8.5

2004

8.1

2002

8.0

2022

8.5

2000

7.1

1989

7.7

2018

7.3

1998

6.9

2018

8.5

2019

8.3

2024

7.7

2011

7.6

1996

7.5

2006

8.4

2016

7.7

1999

7.9

2014

8.2

2018

7.0

2007

7.7