<count-to :startVal='0' :endVal='2017' :duration=4000></count-to>
<count-to :startVal='2017' :endVal='0' :duration=8000></count-to>
<count-to :start-val='{{_startVal}}' :end-val='{{_endVal}}' :duration='{{_duration}}' :decimals='{{_decimals}}'
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