When I do an ncdump -v time on the file I get:
int time(time) ;
time:long_name = "Calendar month" ;
time:units = "month" ;
...
data:
time = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ;
I don't see any year information other than in the filename. But the dataset does represent surface data at year 2000.