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Free/Libre/Open Source Software: Survey and Study

6_1. If you develop proprietary software: When did you start to develop proprietary software?
1950 0 0%
1951 1 0.08%
1952 1 0.08%
1953 0 0%
1954 0 0%
1955 0 0%
1956 0 0%
1957 0 0%
1958 0 0%
1959 1 0.08%
1960 0 0%
1961 0 0%
1962 0 0%
1963 0 0%
1964 0 0%
1965 0 0%
1966 0 0%
1967 0 0%
1968 0 0%
1969 0 0%
1970 2 0.16%
1971 0 0%
1972 0 0%
1973 1 0.08%
1974 0 0%
1975 3 0.23%
1976 5 0.39%
1977 8 0.62%
1978 8 0.62%
1979 8 0.62%
1980 15 1.17%
1981 11 0.86%
1982 12 0.93%
1983 13 1.01%
1984 21 1.63%
1985 22 1.71%
1986 21 1.63%
1987 20 1.56%
1988 28 2.18%
1989 31 2.41%
1990 45 3.5%
1991 36 2.8%
1992 47 3.66%
1993 33 2.57%
1994 53 4.12%
1995 90 7%
1996 72 5.6%
1997 97 7.55%
1998 118 9.18%
1999 119 9.26%
2000 186 14.47%
2001 132 10.27%
2002 25 1.95%
     

1285 answers from 2774 insertions (46.32%)

Read the final report for the FLOSS project.

You may also read the Stallman-Ghosh-Glott mail exchange and the Tiemann-Ghosh mail exchange on the FLOSS survey

This questionnaire is part of the FLOSS study (http://www.infonomics.nl/FLOSS/),
for any details regarding it, please use this contact e-mail address.

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