The effectiveness of heat-seeking missiles was only 7% early in the Vietnam War, but improved to approximately 15%–40% over the course of the war. The AIM-4 Falcon used by the USAF had kill rates of approximately 7% and was considered a failure. The AIM-9B Sidewinder introduced later achieved 15% kill rates, and the further improved AIM-9D and J models reached 19%. The AIM-9G used in the last year of the Vietnam air war achieved 40%. Israel used almost totally guns in the 1967 Six-Day War, achieving 60 kills and 10 losses. However, Israel made much more use of steadily improving heat-seeking missiles in the 1973 Yom Kippur War. In this extensive conflict Israel scored 171 of out of 261 total kills with heat-seeking missiles (65.5%), 5 kills with radar guided missiles (1.9%), and 85 kills with guns (32.6%). The AIM-9L Sidewinder scored 19 kills out of 26 fired missiles (73%) in the 1982 Falklands War. But, in a conflict against opponents using thermal countermeasures, the United States only scored 11 kills out of 48 fired (Pk  23%) with the follow-on AIM-9M in the Gulf War.

When was the effectiveness of heat-seeking missiles better, early in the Vietnam war or over the course of the war?
A: over the course of

The median income for a household in the city is $40,146, and the median income for a family is $50,271. Males have a reported median income of $35,279 versus $29,344 reported for females. The per capita income for the city is $22,643. 13.1% of the population and 8.5% of families are below the poverty line. Out of the total population, 15.7% of those under the age of 18 and 10.4% of those 65 and older are living below the poverty line. Figures delineating the income levels based on race are not available at this time. According to the Modern Language Association, in 2010 80.92% (539,885) percent of Multnomah County residents ages 5 and over spoke English as their primary language at home. 8.10% of the population spoke Spanish (54,036), with Vietnamese speakers making up 1.94%, and Russian 1.46%.

Speakers of which language had more speakers in Multnomah County, Russian or Vietnamese?
A: Vietnamese

About 25,000,000 people in the worlds thirty richest countries will have lost their jobs between the end of 2007 and the end of 2010 as the economic downturn pushes most countries into recession. In April 2010, the U.S. unemployment rate was 9.9%, but the governments broader U-6 unemployment rate was 17.1%. In April 2012, the unemployment rate was 4.6% in Japan. In a 2012 news story, the Financial Post reported, "Nearly 75 million youth are unemployed around the world, an increase of more than 4 million since 2007. In the European Union, where a debt crisis followed the financial crisis, the youth unemployment rate rose to 18% last year from 12.5% in 2007, the ILO report shows." In March 2018, according to U.S. Unemployment Rate Statistics, the unemployment rate was 4,1%, so it is below to 4.5 to 5.0%, which is the norm, this means that there is still need of employees to work.

In which year was the unemployment rate higher in the EU, 2012 or 2007?
A: