The dataset seems to contain different indexes, which are encoded in the second colum. Here are the possible values:
mur (master)*$ cut -d, -f2 < demo_r_gind3.csv | sort | uniq -c
27691 "CNMIGRAT"
27691 "CNMIGRATRT"
28256 "DEATH"
27810 "GBIRTHRT"
27691 "GDEATHRT"
28053 "GROW"
28053 "GROWRT"
1 "indic_de"
30040 "JAN"
28494 "LBIRTH"
28256 "NATGROW"
27691 "NATGROWRT"
I assume that "GROWRT" is the growth rate, the percentage of growth
These are the values for time:
mur (master)*$ cut -d, -f4 < demo_r_gind3.csv | sort | uniq -c
15985 2000
17435 2001
17847 2002
18339 2003
18355 2004
18507 2005
18555 2006
18894 2007
19370 2008
20074 2009
20073 2010
20222 2011
20372 2012
20437 2013
21645 2014
21648 2015
1968 2016
1 "time"