Challenging question: add TIME TREND in Excel with built-in functi

[Patrick]

Hello guys,

I am looking forward adding a time trend to a Taylor rule data set for
Central Banks rates forecasts in Excel. (for Eviews users, its is the
'@TREND' function)

It is usually associated to regressions to add a lag in your calculations,
but I didn't find anything even in the Data Analysis Toolpack, =TREND(),
=FORECAST(), =LINEST() functions etc...

Is any statistician around to give me a hand please ?

Thx in advance

Patrick