Nitrogen use efficiency in American Samoa
American Samoa: Nitrogen use efficiency was 62.1% in 2014. ▲ Rising
Nitrogen use efficiency in American Samoa, 1961–2014
Source: Lassaletta et al. (2014) – processed by Our World in Data. Measured in %.
Analysis
The most recent figure for nitrogen use efficiency in American Samoa is 62.1%, measured in 2014. That is the highest value across all 54 years on record.
The figure is up 23.8% on the previous year and up 54.9% over ten years.
Over the whole period, nitrogen use efficiency in American Samoa peaked at 62.1% in 2014 and was at its lowest, 19.4%, in 1989.
That places American Samoa 67th out of 204 countries with data for 2014, putting it in the middle of the range.
The long-run direction has been consistently rising across the 54 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 32.6% | 23.3% | 40.7% | 9 |
| 1970s | 29.8% | 23.4% | 33.2% | 10 |
| 1980s | 22.4% | 19.4% | 26.2% | 10 |
| 1990s | 28.5% | 23.5% | 40.3% | 10 |
| 2000s | 41.3% | 32.2% | 47.2% | 10 |
| 2010s | 50.7% | 46.2% | 62.1% | 5 |
Countries ranked near American Samoa
More reference data data for American Samoa
- Temperature anomalies by month 0.0944 °C (2026)
- Spring temperature anomalies 0.1942 °C (2026)
- Summer temperature anomalies -0.1017 °C (2026)
- Precipitation anomalies 406.76 millimeters (2025)
- Autumn temperature anomalies -0.3295 °C (2025)
- Annual precipitation 2,994 millimeters (2025)
- Winter temperature anomalies 0.2171 °C (2025)
- Share of men and women expected to survive to the age of 65 82.6% (2024)
- Seafood production: wild fish catch vs. aquaculture 15 metric tons (2024)
- Share of men expected to survive to the age of 65 70.2% (2024)
Frequently asked questions
- What is nitrogen use efficiency in American Samoa?
- Nitrogen use efficiency in American Samoa was 62.1% in 2014, according to Lassaletta et al. (2014) – processed by Our World in Data.
- What is the highest nitrogen use efficiency recorded in American Samoa?
- The highest recorded value was 62.1% in 2014.
- What is the lowest nitrogen use efficiency recorded in American Samoa?
- The lowest recorded value was 19.4% in 1989.
- How does American Samoa rank for nitrogen use efficiency?
- American Samoa ranks 67th out of 204 countries with data for 2014.
- Is nitrogen use efficiency rising or falling in American Samoa?
- Over the last ten years it is up 54.9%. The long-run trend across the full record is rising.
- Where does this American Samoa data come from?
- The figures come from Lassaletta et al. (2014) – processed by Our World in Data, published as part of Nitrogen use efficiency. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 54 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Nitrogen use efficiency (NUE) is the ratio between nitrogen inputs and output. A NUE of 40% means that only 40% of nitrogen inputs are converted into nitrogen in the form of crops.