2003

7.6

2002

7.9

2017

7.8

1997

8.4

2003

8.3

2018

7.9

1980

7.0

2019

7.8

2019

7.4

2010

7.5

2016

8.5

2018

8.2

2021

7.7

1965

7.2

1987

6.6

2000

8.6

2019

6.9

2018

7.5

2010

7.7

2016

8.5