Year	Percent
1950	8.51819
1955	9.94722
1960	9.38395
1965	7.76989
1970	7.34096
1975	7.17321
1980	8.62446
1985	9.12443
1990	7.04999
1995	6.6032
2000	6.09302
2005	4.6131
2010	4.76033
2015	5.62651
2020	5.44866
2025	5.30365
2030	5.0396
2035	4.72543
2040	4.61087
2045	4.85495
2050	5.1332
2055	5.19969
2060	5.1219
2065	5.00617
2070	4.94879
2075	5.02163
2080	5.17865
2085	5.27578
2090	5.24442
2095	5.12782
2100	5.01372