1976

7.8

2022

6.4

2021

10.0

2023

7.0

2014

8.5

1994

8.7

2019

7.8

1994

8.5

1997

7.9

1968

8.1

1976

8.1

2016

7.9

2017

7.3

2015

7.6

2015

7.6

1989

8.3

2000

8.1

2019

8.5

2021

7.8

2014

8.0