1990

7.3

1985

8.3

1994

8.7

1972

8.7

1997

7.9

2016

7.6

2015

7.9

2016

7.6

2009

7.6

1987

7.3

1990

7.4

1995

8.0

2007

7.1

2008

8.5

2017

6.1

2018

7.4

1989

7.8

2019

8.1

2023

8.4

1979

8.2