SendSignedTransaction – How to Use sendSignedTransaction Without Waiting

I am sending ether to multiple accounts and I want to send them without delay or waiting for confirmation of previous transaction.

const fs   = require("fs");
const os   = require("os");
const Web3 = require("web3");
const net  = require('net');

const NODE_ADDRESS = "IPC";
const SEND_ACCOUNT = "ACC";
const PRIVATE_KEY  = "PRI";
const INPUT_FILE   = "CSV";

async function run() {
    const web3      = new Web3(NODE_ADDRESS, net);
    let nonce_count = await web3.eth.getTransactionCount(SEND_ACCOUNT);

    const lines     = fs.readFileSync(INPUT_FILE, {encoding: "utf8"}).split(os.EOL);
    for (const line of lines) {
        const [id, address, balance] = line.split(",");
        const options = {
            to       : address,
            value    : balance,
            gasPrice : 1000000000,
            gas      : 21000,
            nonce    : nonce_count
        };
        const signed  = await web3.eth.accounts.signTransaction(options, PRIVATE_KEY);
        const receipt = await web3.eth.sendSignedTransaction(signed.rawTransaction);
        console.log("Address:",address,"Balance:",balance,"Nonce:",nonce_count);
        nonce_count++
    }
}

run();

Thanks in advance.