Technology

5.4

/

2012

5.9

/

2009

6.4

/

2004

6.5

/

2015

6.1

/

2006

4.9

/

1983

6.5

/

2017

5.8

/

2008

6.7

/

2020

6.19

/

2013

6.64

/

2013

6.5

/

2013

7.1

/

NaN

6.644

/

2011

6.7

/

1961

5.7

/

1990

5.5

/

1958

6.576

/

2015

6.6

/

2011

6.2

/

1986