How many observations are needed to calibrate a DSGE model?

Hi everyone,.
In most DSGE models they use the series of GDP, consumption, investment, trade balance, etc. and the ratios with respect to GDP, the variance of the series, the relative variances and correlations with the GDP are calculated.

How many observations is the minimum required? In a recent article they use 19 observations with annual data. Can I use 10 observations?