Nitrogen use efficiency in American Samoa
American Samoa: Nitrogen use efficiency was 62.05 in 2014. ▲ Rising
Latest (2014)
62.05
Change on year
up 23.8%
World rank
67th
of 205 countries
All-time high
62.05
in 2014
All-time low
19.41
in 1989
Years of data
54
1961–2014
Nitrogen use efficiency in American Samoa, 1961–2014
Source: Our World in Data.
Analysis
The most recent figure for nitrogen use efficiency in American Samoa is 62.05, 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 62.05 in 2014 and was at its lowest, 19.41, in 1989.
That places American Samoa 67th out of 205 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.
Nitrogen use efficiency in American Samoa, year by year
| Year | Value | Change |
|---|---|---|
| 1961 | 34.92 | — |
| 1962 | 40.73 | +16.6% |
| 1963 | 36.61 | -10.1% |
| 1964 | 26.67 | -27.2% |
| 1965 | 23.26 | -12.8% |
| 1966 | 25.99 | +11.8% |
| 1967 | 33.67 | +29.5% |
| 1968 | 35.64 | +5.9% |
| 1969 | 36.05 | +1.2% |
| 1970 | 33.19 | -7.9% |
| 1971 | 32.32 | -2.6% |
| 1972 | 31.53 | -2.4% |
| 1973 | 31.31 | -0.7% |
| 1974 | 30.3 | -3.2% |
| 1975 | 30.08 | -0.7% |
| 1976 | 29.45 | -2.1% |
| 1977 | 28.8 | -2.2% |
| 1978 | 27.74 | -3.7% |
| 1979 | 23.35 | -15.8% |
| 1980 | 26.17 | +12.1% |
| 1981 | 25.65 | -2.0% |
| 1982 | 25.01 | -2.5% |
| 1983 | 24.05 | -3.8% |
| 1984 | 22.32 | -7.2% |
| 1985 | 21.07 | -5.6% |
| 1986 | 21.35 | +1.4% |
| 1987 | 19.63 | -8.1% |
| 1988 | 19.55 | -0.4% |
| 1989 | 19.41 | -0.7% |
| 1990 | 24.37 | +25.6% |
| 1991 | 23.55 | -3.4% |
| 1992 | 23.78 | +1.0% |
| 1993 | 26.4 | +11.0% |
| 1994 | 28 | +6.1% |
| 1995 | 28.84 | +3.0% |
| 1996 | 29.77 | +3.2% |
| 1997 | 31.15 | +4.6% |
| 1998 | 40.28 | +29.3% |
| 1999 | 28.77 | -28.6% |
| 2000 | 32.15 | +11.8% |
| 2001 | 36.54 | +13.7% |
| 2002 | 38.24 | +4.6% |
| 2003 | 40.87 | +6.9% |
| 2004 | 40.07 | -2.0% |
| 2005 | 42.94 | +7.2% |
| 2006 | 43.63 | +1.6% |
| 2007 | 44.95 | +3.0% |
| 2008 | 45.9 | +2.1% |
| 2009 | 47.24 | +2.9% |
| 2010 | 47.5 | +0.5% |
| 2011 | 47.49 | -0.0% |
| 2012 | 46.2 | -2.7% |
| 2013 | 50.13 | +8.5% |
| 2014 | 62.05 | +23.8% |
American Samoa compared with similar countries
- American Samoa's 62.05 is above the median for high income countries, which is 35.97, 1.7× the median. (69 countries reporting)
- American Samoa's 62.05 is above the median for East Asia & Pacific, which is 44.54, 1.4× the median. (32 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 32.62 | 23.26 | 40.73 | 9 |
| 1970s | 29.81 | 23.35 | 33.19 | 10 |
| 1980s | 22.42 | 19.41 | 26.17 | 10 |
| 1990s | 28.49 | 23.55 | 40.28 | 10 |
| 2000s | 41.25 | 32.15 | 47.24 | 10 |
| 2010s | 50.68 | 46.2 | 62.05 | 5 |
Countries ranked near American Samoa
More reference data data for American Samoa
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - Burning - Crop 0.0005 (2050)
- Summer temperature anomalies -0.1017 (2026)
- Autumn temperature anomalies 0.015 (2026)
- Emission Totals - Emissions (N2O) - Burning - Crop residues 0 (2050)
- Spring temperature anomalies 0.1942 (2026)
- Emission Totals - Emissions (CO2eq) from N2O (AR5) - IPCC Agriculture 0.0005 (2050)
- Country level monthly temperature anomalies 0.0944 (2026)
- Emission Totals - Emissions (CO2eq) (AR5) - IPCC Agriculture 0.0023 (2050)
- Emission Totals - Emissions (CO2eq) from CH4 (AR5) - Burning - Crop 0.0018 (2050)
- Emission Totals - Emissions (CO2eq) from CH4 (AR5) - IPCC Agriculture 0.0018 (2050)
Frequently asked questions
- What is nitrogen use efficiency in American Samoa?
- Nitrogen use efficiency in American Samoa was 62.05 in 2014, according to Our World in Data.
- What is the highest nitrogen use efficiency recorded in American Samoa?
- The highest recorded value was 62.05 in 2014.
- What is the lowest nitrogen use efficiency recorded in American Samoa?
- The lowest recorded value was 19.41 in 1989.
- How does American Samoa rank for nitrogen use efficiency?
- American Samoa ranks 67th out of 205 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 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).