Number of Days Images Taken per Year
| Year | Average Images Per Day | Days | Days in Year | Percentage |
| 2008 | 1104.2477 | 323 | 324 | 99.7% |
| 2007 | 865.1890 | 365 | 365 | 100.0% |
| 2006 | 543.6247 | 365 | 365 | 100.0% |
| 2005 | 245.8658 | 365 | 365 | 100.0% |
| 2004 | 48.7459 | 366 | 366 | 100.0% |
| 2003 | 28.0411 | 365 | 365 | 100.0% |
| 2002 | 16.5393 | 356 | 365 | 97.5% |
| 2001 | 9.0385 | 338 | 365 | 92.6% |
| 2000 | 6.5157 | 318 | 366 | 86.9% |
| 1999 | 4.7014 | 278 | 365 | 76.2% |
| 1998 | 3.1300 | 223 | 365 | 61.1% |
| 1997 | 3.2822 | 202 | 365 | 55.3% |
| 1996 | 4.4082 | 196 | 366 | 53.6% |
| 1995 | 3.5938 | 192 | 365 | 52.6% |
| 1994 | 2.8293 | 164 | 365 | 44.9% |
| 1993 | 3.1338 | 157 | 365 | 43.0% |
| 1992 | 3.7484 | 159 | 366 | 43.4% |
| 1991 | 3.1351 | 185 | 365 | 50.7% |
| 1990 | 4.7151 | 186 | 365 | 51.0% |
| 1989 | 3.8208 | 173 | 365 | 47.4% |
| 1988 | 3.7947 | 151 | 366 | 41.3% |
| 1987 | 3.2157 | 153 | 365 | 41.9% |
| 1986 | 2.9065 | 139 | 365 | 38.1% |
| 1985 | 2.2869 | 122 | 365 | 33.4% |
| 1984 | 2.8425 | 127 | 366 | 34.7% |
| 1983 | 3.5909 | 132 | 365 | 36.2% |
| 1982 | 2.6514 | 109 | 365 | 29.9% |
| 1981 | 3.0609 | 115 | 365 | 31.5% |
| 1980 | 3.2110 | 109 | 366 | 29.8% |
| 1979 | 3.8136 | 118 | 365 | 32.3% |
| 1978 | 2.4588 | 85 | 365 | 23.3% |
| 1977 | 3.6250 | 96 | 365 | 26.3% |
| 1976 | 3.4074 | 54 | 366 | 14.8% |
| 1975 | 1.9153 | 59 | 365 | 16.2% |
| 1974 | 2.7250 | 80 | 365 | 21.9% |
| 1973 | 2.7647 | 51 | 365 | 14.0% |
| 1972 | 2.2821 | 39 | 366 | 10.7% |
| 1971 | 1.7333 | 30 | 365 | 8.2% |
| 1970 | 1.4815 | 27 | 365 | 7.4% |
| 1969 | 1.5833 | 24 | 365 | 6.6% |
| 1968 | 2.2414 | 29 | 366 | 7.9% |
| 1967 | 1.6190 | 21 | 365 | 5.8% |
| 1966 | 1.6216 | 37 | 365 | 10.1% |
| 1965 | 1.3636 | 22 | 365 | 6.0% |
| 1964 | 1.4762 | 21 | 366 | 5.7% |
| 1963 | 1.1000 | 20 | 365 | 5.5% |
| 1962 | 2.3571 | 14 | 365 | 3.8% |
| 1961 | 2.0000 | 11 | 365 | 3.0% |
| 1960 | 1.5000 | 8 | 366 | 2.2% |
| 1959 | 1.0000 | 5 | 365 | 1.4% |
| 1958 | 1.1429 | 7 | 365 | 1.9% |
| 1957 | 1.5455 | 11 | 365 | 3.0% |
| 1956 | 1.6364 | 11 | 366 | 3.0% |
| 1955 | 1.6667 | 6 | 365 | 1.6% |
| 1954 | 1.0000 | 3 | 365 | 0.8% |
| 1953 | 1.3333 | 3 | 365 | 0.8% |
| 1952 | 1.0000 | 1 | 366 | 0.3% |
| 1951 | 1.6875 | 16 | 365 | 4.4% |
| 1950 | 1.3750 | 8 | 365 | 2.2% |
| 1949 | 1.5000 | 6 | 365 | 1.6% |
| 1945 | 1.0000 | 1 | 365 | 0.3% |
| 1943 | 1.0000 | 1 | 365 | 0.3% |
| 1940 | 1.0000 | 1 | 366 | 0.3% |
| 1938 | 2.0000 | 1 | 365 | 0.3% |
| 1937 | 1.0000 | 1 | 365 | 0.3% |
| 1933 | 1.0000 | 1 | 365 | 0.3% |
| 1931 | 1.0000 | 1 | 365 | 0.3% |
| 1930 | 2.0000 | 1 | 365 | 0.3% |
| 1927 | 1.0000 | 1 | 365 | 0.3% |
| 1926 | 1.0000 | 1 | 365 | 0.3% |
| 1925 | 1.0000 | 1 | 365 | 0.3% |
| 1920 | 1.0000 | 1 | 366 | 0.3% |
| 1903 | 1.0000 | 1 | 365 | 0.3% |
| 1891 | 1.0000 | 1 | 365 | 0.3% |
The Percentage column is the number of days in that year that we do have photos for (taking into account leap years ;)
