Google analytics – tracking

Include the Google Analytics Tracking Code (ga.js) – HEADER

<script async src='https://www.googletagmanager.com/gtag/js?id=UA-40742215-1'></script>
<script>
    window.dataLayer = window.dataLayer || [];
    function gtag(){
        dataLayer.push(arguments);
    }
    gtag('js', new Date());
    gtag('config', 'UA-000000-1', { 'anonymize_ip': true });
</script>