Articles, R+D expenditure and percentage;Period;Total Number of articles;1998;23,461 Number of articles;1997;22,077 Number of articles;1996;20,080 Number of articles;1995;18,283 Number of articles;1994;16,214 Number of articles;1993;15,309 Number of articles;1992;13,824 Number of articles;1991;11,903 Number of articles;1990;10,688 Number of articles;1989;10,007 Number of articles;1988;9,342 Number of articles;1987;8,815 Number of articles;1986;8,033 Number of articles;1985;6,956 Number of articles;1984;6,218 Number of articles;1983;5,747 Number of articles;1982;4,967 Number of articles;1981;4,182 Number of articles x 100/researchers FTE public sector;1998;52 Number of articles x 100/researchers FTE public sector;1997;54 Number of articles x 100/researchers FTE public sector;1996;50 Number of articles x 100/researchers FTE public sector;1995;51 Number of articles x 100/researchers FTE public sector;1994;45 Number of articles x 100/researchers FTE public sector;1993;48 Number of articles x 100/researchers FTE public sector;1992;46 Number of articles x 100/researchers FTE public sector;1991;41 Number of articles x 100/researchers FTE public sector;1990;40 Number of articles x 100/researchers FTE public sector;1989;43 Number of articles x 100/researchers FTE public sector;1988;41 Number of articles x 100/researchers FTE public sector;1987;45 Number of articles x 100/researchers FTE public sector;1986;44 Number of articles x 100/researchers FTE public sector;1985;42 Number of articles x 100/researchers FTE public sector;1984;38 Number of articles x 100/researchers FTE public sector;1983;36 Number of articles x 100/researchers FTE public sector;1982;32 Number of articles x 100/researchers FTE public sector;1981;26 Public expen. x 100/number of articles (thousands ptas);1998;15,645 Public expen. x 100/number of articles (thousands ptas);1997;15,250 Public expen. x 100/number of articles (thousands ptas);1996;16,138 Public expen. x 100/number of articles (thousands ptas);1995;16,363 Public expen. x 100/number of articles (thousands ptas);1994;17,672 Public expen. x 100/number of articles (thousands ptas);1993;18,671 Public expen. x 100/number of articles (thousands ptas);1992;19,107 Public expen. x 100/number of articles (thousands ptas);1991;17,513 Public expen. x 100/number of articles (thousands ptas);1990;16,585 Public expen. x 100/number of articles (thousands ptas);1989;14,630 Public expen. x 100/number of articles (thousands ptas);1988;13,065 Public expen. x 100/number of articles (thousands ptas);1987;11,555 Public expen. x 100/number of articles (thousands ptas);1986;10,705 Public expen. x 100/number of articles (thousands ptas);1985;9,998 Public expen. x 100/number of articles (thousands ptas);1984;9,776 Public expen. x 100/number of articles (thousands ptas);1983;9,661 Public expen. x 100/number of articles (thousands ptas);1982;9,893 Public expen. x 100/number of articles (thousands ptas);1981;9,491 Global production percentage;1998;2.5 Global production percentage;1997;2.4 Global production percentage;1996;2.2 Global production percentage;1995;2.1 Global production percentage;1994;2.0 Global production percentage;1993;2.0 Global production percentage;1992;1.9 Global production percentage;1991;1.7 Global production percentage;1990;1.6 Global production percentage;1989;1.5 Global production percentage;1988;1.3 Global production percentage;1987;1.2 Global production percentage;1986;1.1 Global production percentage;1985;1.0 Global production percentage;1984;0.9 Global production percentage;1983;0.9 Global production percentage;1982;0.8 Global production percentage;1981;0.7