人口の推移
単位: 100万人
| 年 | 米国 | 日本 |
|---|---|---|
| 1980 | 227.62 | 116.77 |
| 1981 | 229.92 | 117.62 |
| 1982 | 232.13 | 118.45 |
| 1983 | 234.25 | 119.27 |
| 1984 | 236.31 | 120.05 |
| 1985 | 238.42 | 120.80 |
| 1986 | 240.59 | 121.45 |
| 1987 | 242.75 | 122.03 |
| 1988 | 244.97 | 122.55 |
| 1989 | 247.29 | 123.03 |
| 1990 | 250.05 | 123.44 |
| 1991 | 253.39 | 123.93 |
| 1992 | 256.78 | 124.37 |
| 1993 | 260.15 | 124.77 |
| 1994 | 263.33 | 125.12 |
| 1995 | 266.46 | 125.44 |
| 1996 | 269.58 | 125.71 |
| 1997 | 272.82 | 126.01 |
| 1998 | 276.02 | 126.35 |
| 1999 | 279.20 | 126.59 |
| 2000 | 282.30 | 126.83 |
| 2001 | 285.22 | 127.13 |
| 2002 | 288.02 | 127.40 |
| 2003 | 290.73 | 127.63 |
| 2004 | 293.39 | 127.73 |
| 2005 | 296.12 | 127.75 |
| 2006 | 298.93 | 127.75 |
| 2007 | 301.90 | 127.76 |
| 2008 | 304.72 | 127.69 |
| 2009 | 307.37 | 127.55 |
| 2010 | 309.75 | 127.59 |
| 2011 | 312.00 | 127.83 |
| 2012 | 314.28 | 127.55 |
| 2013 | 316.50 | 127.33 |
| 2014 | 318.85 | 127.12 |
| 2015 | 321.22 | 126.98 |
| 2016 | 323.57 | 126.96 |
| 2017 | 325.89 | 126.75 |
| 2018 | 328.12 | 126.43 |