average population (x 1000) live births deaths natural change crude birth rate (per 1000) crude death rate (per 1000) natural change (per 1000)
average population -lrb- x 1000 -rrb-
live births
deaths
natural change
crude birth rate -lrb- per 1000 -rrb-
crude death rate -lrb- per 1000 -rrb-
natural change -lrb- per 1000 -rrb-
number
number
number
number
number
number
number
number
number number number number number number number number
1970 31 683 356 327 22.0 11.5 10.5
in how many years was there a negative -lrb- listed in red -rrb- natural change ?
IN WRB JJ NNS VBD-AUX EX DT JJ -LRB- VBN IN JJ -RRB- JJ NN .
16
select count ( c1 ) from w where c5_number < 0