R version 3.0.1 (2013-05-16) -- "Good Sport"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

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> x <- c(31.5,31.29,31.3,31.06,31.09,31.11,31.13,31.1,31.03,30.74,30.83,30.82,30.8,30.74,30.71,30.58,30.71,30.7,30.7,30.72,30.68,30.78,30.84,30.8,30.8,30.88,30.87,30.92,30.82,30.75,30.75,30.75,30.63,30.52,30.58,30.6,30.6,30.63,30.56,30.61,30.53,30.6,30.6,30.63,30.66,30.34,30.32,30.3,30.3,30.08,29.96,29.91,29.83,29.89,29.85,30.06,29.83,29.95,30.02,30.03,30.03,29.96,29.85,30.12,29.91,29.9,29.92,29.89,29.96,29.72,29.6,29.54,29.54,29.54,29.48,29.55,29.58,29.6,29.6,29.56,29.7,29.76,29.24,29.28)
> par4 = '12'
> par3 = 'Gemiddelde consumptieprijzen per product: apparaten en toebehoren, incl. reparatie - spelen, speelgoed en hobby's, sport'
Error: unexpected symbol in "par3 = 'Gemiddelde consumptieprijzen per product: apparaten en toebehoren, incl. reparatie - spelen, speelgoed en hobby's"
Execution halted