1992

6.8

1983

8.1

1998

8.6

2009

7.2

2016

7.4

1999

9.5

1990

7.1

2011

7.5

2019

6.7

2011

7.0

2021

4.8

2017

7.6

1976

7.3

2019

7.6

2022

9.0

2008

7.1

2005

6.2

2022

6.2

1980

9.2