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The 2023 data represent the highest level recorded and experienced an increase of 1.9% or 994 Mt CO 2 eq compared to the levels in 2022. The majority of GHG emissions consisted of fossil CO 2 accounting for 73.7% of total emissions.
The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol, but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.
The steady employment gains in recent months suggest a rough answer. The unemployment rate has been 7.9 percent, 7.8 percent and 7.8 percent for the past three months, while the labor force participation rate has been 63.8 percent, 63.6 percent and 63.6 percent. Meanwhile, job gains have averaged 151,000.
The United States has a highly developed mixed economy. [44] [45] [46] It is the world's largest economy by nominal GDP and second largest by purchasing power parity (PPP). [47]As of 2024, it has the world's sixth highest nominal GDP per capita and eighth highest GDP per capita by PPP). [10]
The usage share of web browsers is the portion, often expressed as a percentage, ... 8.1%: 6.3%: 3.0% August 2019: 56.8%: 12.3%: 7.8%: 5.3%: 2.1% July 2019: 55.4%: 12 ...
[281] [282] The state sales and use tax rate is 4.3%, though there is an additional 1% local tax, for a total of a 5.3% combined sales tax on most purchases. Three regions then have a higher sales tax: 6% in Northern Virginia and Hampton Roads, and 7% in the Historic Triangle . [ 283 ]