Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| date of sterilization | age 10 - 19 | age 20 - 29 | age 30 - 39 | age 40 - 49 | age 50 - 59 | age unknown | total |
| jan 1929 - jun 1935 | 87 | 87 | 42 | 4 | 2 | 1 | 223 |
| jul 1935 - jun 1940 | 380 | 205 | 112 | 11 | 1 | 0 | 709 |
| jul 1940 - jun 1950 | 727 | 593 | 249 | 36 | 0 | 1 | 1606 |
| jul 1950 - jun 1960 | 936 | 1201 | 745 | 93 | 8 | 0 | 2983 |
| jul 1960 - dec 1968 | 686 | 717 | 260 | 23 | 1 | 0 | 1687 |
| jan 1969 - dec 1974 | 174 | 118 | 26 | 2 | 0 | 0 | 320 |
Title:
none
Statement:
from jan 1969 to dec 1974 , only 20 between age 40 and 49 were sterilized
Answer:
refuted