Year	Percent
1950	9.54405
1955	9.94134
1960	7.48555
1965	6.88164
1970	9.72097
1975	10.38133
1980	9.46046
1985	7.98021
1990	7.7994
1995	8.42346
2000	9.51646
2005	10.02006
2010	8.13954
2015	5.96486
2020	4.94795
2025	5.38368
2030	5.65615
2035	5.19202
2040	4.73918
2045	4.44507
2050	4.28343
2055	4.36875
2060	4.56607
2065	4.6752
2070	4.6464
2075	4.58732
2080	4.59864
2085	4.70615
2090	4.85392
2095	4.95259
2100	4.94974