[Retracted] Sales Forecast of Marketing Brand Based on BP Neural Network Model

Table 1

Sales statistics of switch factories in the past 20 years.

Years	Sales	Price index	Income index
2001	10.2	91.8	232.4
2002	17.8	91.8	251.7
2003	18.5	93.6	244.9
2004	28.5	93.8	263.9
2005	51.7	94.3	296.5
2006	132.8	95.8	319.3
2007	249.2	91.6	339.7
2008	539.4	89.8	356.1
2009	592.3	97.2	385.6
2010	684.1	85.5	424.1
2011	1003.8	85.4	481.8
2012	1667.6	86.5	546.8
2013	1459.4	87.1	588.9
2014	1924.5	89.9	649.1
2015	2505.1	105.9	772.4
2016	2766.5	122.2	801.1
2017	2684.5	116.3	839.5
2018	2691.3	111.1	904.2
2019	2867.8	106.2	1034.4
2020	3032.8	108.2	1190.6