April 3, 2025
Great Lakes
Superior
Michigan
Huron
Erie
Ontario
1973
2.5%
1974
28.3%
1975
19.9%
1976
9.8%
1977
35.7%
1978
30.4%
1979
34.1%
1980
26.2%
1981
17.8%
1982
29.2%
1983
7.8%
1984
29.1%
1985
15.9%
1986
20.8%
1987
6.9%
1988
13.8%
1989
27.4%
1990
7.9%
1991
4.9%
1992
15.1%
1993
17.8%
1994
35.8%
1995
4.0%
1996
48.2%
1997
32.2%
1998
0.7%
1999
3.3%
2000
0.9%
2001
13.4%
2002
4.6%
2003
36.6%
2004
9.4%
2005
10.8%
2006
3.0%
2007
7.4%
2008
12.8%
2009
11.3%
2010
0.9%
2011
18.0%
2012
0.3%
2013
6.0%
2014
65.0%
2015
39.5%
2016
1.5%
2017
3.4%
2018
11.5%
2019
12.6%
2020
2.6%
2021
1.1%
2022
13.6%
2023
3.2%
2024
0.4%
2025
4.4%
