1998

6.8

2019

8.1

1994

8.5

2018

6.9

1994

8.7

2007

7.8

2019

7.8

2000

8.2

2023

8.1

1981

7.3

2024

7.2

2015

7.6

1999

8.4

2016

8.5

2017

7.6

2011

6.9

2012

7.8

2018

6.8

2016

7.6

2003

7.2