1990

6.1

1989

7.3

2003

6.7

2003

6.2

1992

6.7

1988

6.0

2020

7.4

1992

7.4

1974

8.6

2010

6.6

2009

6.5

1971

7.1

1997

7.6

2021

7.4

2012

6.4

2022

6.3

2021

6.8

1986

7.7

1994

7.9

2022

6.9