Repeating stanza numbers

[Matie Holtzhausen]

Hi,

\version "2.14"

\relative c' {c2 c \break c c}
\addlyrics{
 \set stanza = #"1. "
 la la
 \set stanza = #"1. "
 la la
}


Is there a way I can repeat stanza numbers in every system like above, if I 
don't know where it is going to break?

Thanks, Matie