Dear all,

For my thesis, for which I have gathered panel data, I have to run a logit regression with year and industry fixed effects. I did this with the code:

'Logit y x1 x2 x3 i.sic i.fyear, vice(robust)'

My data has around 50.000 observations from 2010 through 2019.
However now I see, in the output, that the year dummy variable only starts at 2013, while my panel data starts in 2010. Does anyone know the reason why three years are skipped? In addition, for the last year of my data (2019), it is said that '2019 is committed because of collinearity'
Is this normal? I am a beginner in terms of STATA, so I have no idea...
Thank you!