Spring Surveys, 3-year averages

Number of sea otters counted during spring surveys, plotted as 3-year running averages.
(Example: values for 2006 are the average of the 2005, 2006, and 2007 counts.)

YEAR	Total	Independents	Pups		Total 3-yr avg	Ind 3-yr avg	Pups 3-yr avg
1983	1277	1156	121
1984	1303	1180	123		1313.67	1151.67	162.00
1985	1361	1119	242		1416.67	1219.00	197.67
1986	1586	1358	228		1536.00	1304.00	232.00
1987	1661	1435	226		1657.33	1432.33	225.00
1988	1725	1504	221		1747.33	1503.33	244.00
1989	1856	1571	285		1753.67	1513.67	240.00
1990	1680	1466	214		1825.67	1579.00	246.67
1991	1941	1700	241		1907.33	1658.67	248.67
1992	2101	1810	291		2093.67	1844.00	249.67
1993	2239	2022	217		2233.00	1969.33	263.67
1994	2359	2076	283		2325.00	2064.33	260.67
1995	2377	2095	282		2338.00	2044.67	293.33
1996	2278	1963	315		2294.67	1992.33	302.33
1997	2229	1919	310		2207.00	1945.67	261.33
1998	2114	1955	159		2144.33	1910.67	233.67
1999	2090	1858	232		2173.67	1955.33	218.33
2000	2317	2053	264		2189.33	1924.67	264.67
2001	2161	1863	298		2205.67	1920.67	285.00
2002	2139	1846	293		2268.33	1993.00	275.33
2003	2505	2270	235		2489.67	2203.67	286.00
2004	2825	2495	330		2688.33	2394.00	294.33
2005	2735	2417	318		2750.67	2427.00	323.67
2006	2692	2369	323		2817.67	2474.33	343.33
2007	3026	2637	389