Modeling Method of the Grey GM(1,1) Model with Interval Grey Action Quantity and Its Application

Table 1

China’s total natural gas consumption (TC) in 2009–2018 (unit: ten thousand tons standard coal).

Year	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018
TC	11764.41	14425.92	17803.98	19302.62	22096.39	24270.94	25364.40	27904.00	31397.04	36192.00