How to get numbers after special character using regex

Question

import re
string = "He go $200 and umm go $136.33. His ssn number:987-645-33 and the got credit:973647 with 155 percent discount "
a = re.findall(r"(?:(?<=ssn number:)|(?<=credit:)|(?<=$))[\w\d-]+",string)
print(a)

Required solution:['$200','$136.33','987-645-33','973647']

Is there any solution to get the $ values using the regex. The $ symbol should be added in list