YRSINUSG - Continuous variable?

Is there a continuous variable to note how many years have migrants been in the US?
Like the variable YRSINUSG but not in categorical form?
I am looking at the year 2015.
Thank you!

Unfortunately there is not a continuous version of this variable available in the NHIS data. If you are working with IPUMS MEPS data, the variable YRSINUSC provides a continuous measure for the 2007-2012 samples, but is replaced with a grouped year estimate version (YRSINUSG) in 2013.