reset
set terminal svg size 1150,600 font "DejaVu Sans,20"
set key top left box lw 1.5 samplen 2 title 'Plays'
set border 3 linewidth 3
set grid lt 1 lw 1.5 lc rgb 0xAA090909 front
set xdata time
set timefmt '%Y-%m-%d'
set format x '%Y'
set ylabel 'Dry shale gas production in bcf/day'
set tics nomirror out
set xtics 60*60*24*365.25 rotate by 45 right
unset mxtics
set autoscale xfix
set yrange [0:]

set datafile separator ";"
set output 'Shale gas production USA.svg'

plot \
  for [i=2:13] \
    'data.csv' using 1:(sum [col=i:13] column(col)) \
      title columnheader(i) \
      with filledcurves x1

unset output