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Supplements to the study "Is the Phillips Curve of Germany Spurious?" by G. Quaas and M. Klein
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Definitions of variables based on the German System of National Accounts - click here.
For the nominal wage rates (wr) we use the monthly labour costs per employee:
wr = lkmo
The seasonal adjustment (smoothing) is achieved by the definition of the wage rate change
(wr_ch) based on a four quarter difference:
wr_ch = (wr - wr(-4))/wr(-4)*100
The unemployment rate (ue) and its moving average (ue_ma) of four quarters is taken from the number of unemployed
divided by the amount of working force:
series ue = aleb/ewpers*100
ue_ma = @movav(ue,4)
As indicator for the inflation we utilise the chained consumer price index and, accordingly, the one of the import prices (Pim), and of the
export prices (Pex).
infl = (cpripe-cpripe(-4))/cpripe(-4)*100
impe_ch = (impe - impe(-4))/impe(-4)*100
expe_ch= (expe - expe(-4))/expe(-4)*100
The values for the productivity equal the labour productivity per employee.
apew_ch =(apewki-apewki(-4))/apewki(-4)*100
The profit rates (R) are operationalized by property income related to the income of employees.
r = (yuv - yan/ewan*ewslb)/yan*100
r_ch = (r-r(-4))/r(-4)*100
Trend of unemployment:
ue_ma.hpf(lambda=1600) ue_ma_trend
Trend of wage rate changes:
wr_ch.hpf(lambda=1600) wr_ch_trend
Further smoothed series:
ue_ma.hpf(lambda=100) ue_ma_hp100
wr_ch.hpf(lambda=100) wr_ch_hp100
Cyclical component of unemployment:
ue_ma_cycle = ue_ma_hp100 - ue_ma_trend
Cyclical component of wage rate changes:
series wr_ch_cycle = wr_ch_hp100 - wr_ch_trend
Other variables: analogous