RetM, the percentage of goaltender minutes played last season for returning goalies divided by those of all goalies, is about the best indicator you�re going to see for experience in net. Note that virtually every team in the ECAC returns its principal netminders:
Team Ret Lost All RetM Brown 1884 0 1884 1.000 Clarkson 2218 0 2218 1.000 Colgate 2140 3 2143 .999 Cornell 1871 0 1871 1.000 Dartmouth 1755 0 1755 1.000 Harvard 1930 0 1930 1.000 Princeton 1399 652 2051 .682 RPI 2242 0 2242 1.000 St. Lawrence 155 2206 2361 .066 Union 1014 917 1931 .525 Vermont 1349 640 1989 .678 Yale 245 1630 1875 .131