Abortion vs. Gay Marriage vs. Teen Pregnancy vs. Pro-Life vs. Pro-Choice

Today, with the news of the Republican VP choice's daughter having a teen pregnancy, I'd like to compare a number of these type of "value" terms that polticians esp. like to focus on.


Scale is based on the average worldwide traffic of "gay marriage" in all years.
abortion 5.20
"gay marriage" 1.00
"teen pregnancy" 0.50
"pro-life" 0.20
"pro-choice" 0.10

Abortion dominates this face-off and gay marriage had its peak during the 2004 presidential campaign. But what about the other terms? I downloaded the Google Trends data spreadsheet and made a graph with a log scale on the Y-axis and also log trend lines for each term:


Log scale is based on the average worldwide traffic of "gay marriage" in all years.
abortion 5.20
"gay marriage" 1.00
"teen pregnancy" 0.50
"pro-life" 0.20
"pro-choice" 0.10

All terms are declining in Google-popularity though gay marriage is falling the fastest.