Since when?

So, there's this Mexican restaurant in town. The sign says "since 1981." My initial reaction is, why should that be impressive? There's another restaurant down the street that's "since 1965." But then I remember: 1981 was TWENTY-SEVEN years ago, and that's a pretty good run for a family restaurant. You know the statistic: most businesses fail in their first year. My all-time favorite, though, is a sign I saw in Germany - "Loewenapotheke, seit 1431." Translation: Lion's Pharmacy. Since 1431. THAT'S worth bragging about.