diff --git a/index.html b/index.html
index e20d721b..de76ff34 100644
--- a/index.html
+++ b/index.html
@@ -5,6 +5,15 @@
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <link rel="stylesheet" type="text/css" href="commonStyle.css">
 <head>
+<!-- Google tag (gtag.js) -->
+<script async src="https://www.googletagmanager.com/gtag/js?id=G-1MQ3FW9QKF"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'G-1MQ3FW9QKF');
+</script>
 <style>
 
 table#quoteTable {
