1988

5.5

1994

7.4

2012

6.4

2023

6.4

2018

6.2

1989

5.8

2021

7.1

2017

6.4

1993

6.1

1968

6.9

1988

5.8

2004

4.8

2010

6.1

2018

6.2

2018

7.5

2008

6.4

1983

6.6

1990

5.9

1960

7.7

2004

5.3