2000

6.4

2012

6.6

1984

6.5

1991

5.7

2009

7.7

2016

6.1

1957

7.2

2005

8.6

1981

6.0

1958

5.6

2021

6.7

1989

7.0

2001

6.9

2003

6.8

2003

5.3

2023

6.2

2020

7.2

2001

5.8

1990

5.5

2005

7.8