diff --git a/cousin-marriage/README.md b/cousin-marriage/README.md
new file mode 100644
index 0000000..4147b6e
--- /dev/null
+++ b/cousin-marriage/README.md
@@ -0,0 +1,9 @@
+### Cousin Marriage Data
+
+The raw data behind the story [Dear Mona: How Many Americans Are Married To Their Cousins?]
+
+Header | Definition
+---|---------
+`percent` | Percent of marriages that are consanguineous
+
+Source: [cosang.net](http://www.consang.net/index.php/Main_Page)
\ No newline at end of file
diff --git a/cousin-marriage/cousin-marriage-data.csv b/cousin-marriage/cousin-marriage-data.csv
index 8f47929..d972c46 100644
--- a/cousin-marriage/cousin-marriage-data.csv
+++ b/cousin-marriage/cousin-marriage-data.csv
@@ -1,8 +1,8 @@
-Country,Percent of marriages that are consanguineous
+Country,Percent
 Burkina Faso,65.8
 Kuwait,51.7
 Nigeria,51.2
-Pakistan,51
+Pakistan,51.0
 Sudan,50.4
 Kyrgyzstan,45.2
 Qatar,44.5
@@ -10,14 +10,14 @@ Bahrain,44.4
 Saudi Arabia,38.4
 Tanzania,37.8
 Libya,37.6
-United Arab Emirates,36
+United Arab Emirates,36.0
 Oman,35.9
 Yemen,34.9
 Iraq,34.3
 Iran,32.2
 Syria,31.6
 Jordan,31.6
-Egypt,31
+Egypt,31.0
 Tunisia,26.9
 Lebanon,26.6
 India,26.6
@@ -26,14 +26,14 @@ Uzbekistan,23.3
 Algeria,22.6
 Sri Lanka,21.5
 Turkey,20.1
-Israel,20
-Tajikistan,20
+Israel,20.0
+Tajikistan,20.0
 Morocco,19.9
 Indonesia,17.8
 Bangladesh,10.5
 Malaysia,7.6
 Japan,7.6
-China,5
+China,5.0
 El Salvador,4.9
 Brazil,4.3
 Singapore,3.6
@@ -44,7 +44,7 @@ Honduras,3.4
 South Africa,2.8
 Peru,2.5
 Uruguay,2.1
-Spain,2
+Spain,2.0
 Bolivia,1.7
 Panama,1.7
 Portugal,1.6