R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

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> x <- c(1053000,1014000,1072500,858000,1111500,1092000,1170000,1209000,1345500,1170000,1111500,1384500,1170000,877500,1033500,780000,1092000,897000,1189500,1072500,1131000,1267500,1248000,1482000,1072500,897000,994500,721500,1033500,799500,1131000,1072500,955500,1365000,1228500,1404000,1053000,975000,877500,721500,955500,858000,1170000,1131000,975000,1306500,1209000,1560000,1248000,760500,760500,760500,897000,897000,1209000,1111500,994500,1248000,1150500,1657500,1306500,760500,799500,663000,916500,1053000,1326000,1306500,1053000,1228500,1092000,1560000,1189500,955500,858000,643500,955500,1150500,1345500,1267500,936000,1345500,1053000,1618500,1345500,975000,897000,604500,955500,916500,1384500,1384500,1053000,1365000,1014000,1579500,1345500,994500,760500,526500,1033500,994500,1306500,1501500,1111500,1248000,936000,1618500)
> par4 = '12'
> par3 = ''
> par2 = ''
> par1 = 'Aantal verkochte exemplaren van de 'Knack' per maand'
Error: unexpected symbol in "par1 = 'Aantal verkochte exemplaren van de 'Knack"
Execution halted