1979

6.8

1983

6.7

1974

5.1

2009

6.8

2006

5.4

1989

7.0

2019

0.0

2001

7.5

1985

6.6

1999

7.3

1996

5.8

2021

6.8

2003

7.4

2008

7.7

1990

6.6

1995

7.9

2006

6.5

2020

6.6

2022

6.3

2018

7.2