Table:
text: Cantons of Switzerland
List
List
Abbr Canton Capital Density_per_km² No_munic_ s_Official_language
AI Appenzell Innerrhoden Appenzell 87 6 German
SG St. Gallen St. Gallen 222 85 German
GR Graubünden Chur 26 180 German , Romansh , Italian
AG Aargau Aarau 388 220 German
TG Thurgau Frauenfeld 229 80 German
TI Ticino Bellinzona 110 157 Italian
VD Vaud Lausanne 188 339 French
VS Valais Sion 53 143 French , German
NE Neuchâtel Neuchâtel 206 53 French
GE Geneva Geneva 1442 45 French
JU Jura Delémont 82 64 French
CH Switzerland Bern 174 2596 German , French , Italian , Romansh

Question: What is the average density of 53 No. munic. in cantons of Switzerland ?