April 6, 2025
Great Lakes
Superior
Michigan
Huron
Erie
Ontario
1973
2.0%
1974
23.2%
1975
16.3%
1976
8.9%
1977
27.4%
1978
26.2%
1979
32.9%
1980
20.9%
1981
15.3%
1982
27.3%
1983
7.0%
1984
26.5%
1985
11.4%
1986
17.7%
1987
6.9%
1988
11.1%
1989
22.4%
1990
6.2%
1991
4.8%
1992
12.5%
1993
10.2%
1994
29.4%
1995
3.0%
1996
34.2%
1997
26.5%
1998
0.9%
1999
2.6%
2000
0.6%
2001
12.7%
2002
4.4%
2003
31.7%
2004
5.1%
2005
7.0%
2006
2.7%
2007
4.6%
2008
11.1%
2009
9.2%
2010
0.5%
2011
6.8%
2012
0.2%
2013
6.2%
2014
53.7%
2015
37.3%
2016
1.3%
2017
2.4%
2018
9.0%
2019
13.1%
2020
2.0%
2021
0.9%
2022
11.9%
2023
2.8%
2024
0.3%
2025
3.5%
