1994

6.8

1982

7.6

2013

8.0

2015

7.5

1978

7.2

1984

7.8

2017

6.4

2015

8.1

2021

7.9

1997

7.3

2007

7.6

2000

8.0

2016

7.1

2019

7.4

2023

7.0

1974

7.7

2021

7.9

2006

7.4

2024

8.3

2000

8.1