Fix multiple month display of SAML 2 entities.

Note that this won't go all the way back to the start of records
because the XSLT depends on published metadata containing
registrationAuthority metadata, which we started using
in September 2012.

charting/saml2.pl

@@ -27,11 +27,21 @@
 	open(TXT, xalanCall . " -IN $fn -XSL saml2.xsl|") || die "could not open input file";
 	$_ = <TXT>;
 	chop;
+	# print "$month: $_\n";
 	my ($entities, $idps, $sps, $saml2total, $saml2idp, $saml2sp) = split;
-	push @overallRatio, $saml2total/$entities;
-	push @idpRatio, $saml2idp/$idps;
-	push @spRatio, $saml2sp/$sps;
-	push @product, ($saml2idp/$idps)*($saml2sp/$sps);
+	if ($entities == 0) {
+		# print "skipping $month: $_\n";
+		next;
+	}
+	my $mPrefix = $allMonths ? "$month: " : '';
+	my $oRatio = $saml2total/$entities;
+	push @overallRatio, "$mPrefix$oRatio";
+	my $iRatio = $saml2idp/$idps;
+	push @idpRatio, "$mPrefix$iRatio";
+	my $sRatio = $saml2sp/$sps;
+	push @spRatio, "$mPrefix$sRatio";
+	my $p = ($saml2idp/$idps)*($saml2sp/$sps);
+	push @product, "$mPrefix$p";
 	close TXT;
 }
 
@@ -55,4 +65,4 @@
 	print "$ratio\n";
 }
 
-1;
+1;