A survey was conducted to determine how people rated the quality of programming available on television. Respondents were asked to rate the overall quality from 0 (no quality at all) to 100 (extremely good quality). The stem-and-leaf display of the data is shown below.<br/> Stem Leaves<br/> 3 2 4 <br/> 4 0 3 4 7 8 9 9 9<br/> 5 0 1 1 2 3 4 5<br/> 6 1 2 5 6 6<br/> 7 0 1<br/> 8<br/> 9 2<br/> [填空1] percent of the respondents rated overall television quality with a rating of 50 or below?