1992

6.9

1982

7.6

2019

7.2

2006

5.5

2018

5.6

2009

4.9

2015

5.4

2000

7.7

2010

5.5

2004

6.4

1990

6.0

2004

6.7

2020

5.8

2019

5.7

2010

6.9

2019

7.4

2004

6.7

2016

4.2

1964

7.4