4. In January 2024, the noninstitutional population was 268 million, the unemployment rate was 3.7 percent, labor force participation was 62.5 percent, and total employment was 160 million. Suppose that by January of next year, the population has increased to 270 million, the unemployment rate has risen to 4.5 percent, and employment has increased to 162 million. What would this imply about labor force participation in the two years? (Your answer should be a number.)