In the New York $/$ New England $("$NYNE$")$ region, in the luxury writing category, Pennant claims a market share of $18\%.$ If Pennant customers in that region have a usage index of $118\%,$ and if Pennant claimed a $37\%$ share of requirements from its customers in that region, calculate Pennant's PENETRATION SHARE in the NYNE region. Report your answer as a percent.

Rounding: tenth of a percent.$)$