AMEX,TOTAL,100%,0%,4.44%,95.56%
AMEX,Principal,100%,0%,100%,100%
NASD,TOTAL,100%,43.57%,39.93%,16.51%
NASD,Principal,99.23%,99.99%,98.14%,99.85%
NYSE,TOTAL,100%,11.69%,2.6%,85.71%
NYSE,Principal,97.4%,100%,0%,100%