[j0hnik]

<script>
f=n => n+" "+['год', 'года', 'лет'][(n%100>4 && n%100<20)?2:[2, 0, 1, 1, 1, 2][(n%10<5)?n%10:5]];  
var age = new Date().getFullYear()-1995;
document.write(f(age));
</script>