Count number of object created or total number of amount per month in Django

object_count_per_month.py

class FundRaisePerMonth(APIView):
    def get(self, request):
        year = datetime.date.today().year
        # Filter data as monthly(number serial) [{'month_serial': views_count} like [{'1': 50, '2': 55}]
        queryset = CustomUser.objects.filter(date_joined__year=year)
        search = queryset.annotate(month=ExtractMonth('date_joined'),).order_by('month').values('month')\
            .annotate(total=Sum('amount')).values('month', 'total')

        # convert int month to str month, 1 to January
        data = []
        for s in search:
            s["month"] = calendar.month_name[s["month"]]
            data.append(s)
        return Response(data)