review of "The increasing atmospheric burden of the greenhouse gas sulfur hexafluoride (SF6)"

This manuscript bring together SF6 data since 1978 to present (2018) and discusses the global total and regional emissions based on inversion modelling tools.The research topic is relevant and executed nicely.I have enjoyed reading the manuscript which is prepared in a timely manner.I have a few comments for consideration by the authors, before the manuscript can be accepted for publication.I reallly want the authors to explain the anomalies seen the time series of global growth rates, global total emissions and emission from China