Year	Percent
1950	9.15761
1955	8.67803
1960	8.93171
1965	9.67
1970	10.90758
1975	12.42396
1980	12.25101
1985	10.45971
1990	8.61043
1995	7.64922
2000	7.87667
2005	7.82339
2010	7.67641
2015	6.64958
2020	6.35188
2025	5.78354
2030	5.96097
2035	6.01609
2040	5.90579
2045	5.79308
2050	5.65451
2055	5.55072
2060	5.50934
2065	5.49474
2070	5.43819
2075	5.33985
2080	5.23629
2085	5.16532
2090	5.12283
2095	5.10229
2100	5.07432