Year	Percent
1950	10.12621
1955	9.61459
1960	12.27207
1965	10.65232
1970	9.53065
1975	9.08242
1980	6.96752
1985	7.33469
1990	7.71217
1995	7.36019
2000	6.83175
2005	6.42919
2010	5.442
2015	4.65333
2020	4.46627
2025	4.74841
2030	4.85254
2035	4.87693
2040	4.72339
2045	4.46335
2050	4.30546
2055	4.35065
2060	4.5031
2065	4.6211
2070	4.63565
2075	4.57346
2080	4.4986
2085	4.49391
2090	4.56994
2095	4.65801
2100	4.68859