ECU Libraries Catalog
- 1963 to 1964 20,805
- 1965 to 1969 63,082
- 1970 to 1974 78,511
- 1975 to 1979 95,044
- 1980 to 1984 92,143
- 1985 to 1989 120,579
- 1990 to 1994 153,067
- 1995 to 1999 195,172
- 2000 to 2004 221,820
- 2005 to 2009 254,394
- 2010 to 2014 248,195
- 2015 to 2015 43,648