That's a pretty misleading statistic there. US unemployment in that time period has tended to increase in spikes on the order of a few months then fall rapidly

That's a pretty misleading statistic there. US unemployment in that time period has tended to increase in spikes on the order of a few months then fall rapidly in most cases but slowly since the 2007 recession. So you'd expect that in any randomly selected state with an unemployment rate over 7% it'll have decreased after one year in 90+% of cases. If you're willing to be creative you can come up with a statistic that seems to support nearly anything. There are plenty of decent arguments and studies you can use in support of a minimum wage rather than something like this.